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LDAP filter injection in Roundcube Webmail arises from unescaped substitution variables (`%u`, `%fu`, `%d`) embedded directly into LDAP `search_filter` configuration strings, affecting all 1.6.x releases before 1.6.18 and 1.7.x releases before 1.7.3. An authenticated user whose login credentials contain crafted LDAP metacharacters can manipulate server-side directory queries, potentially disclosing LDAP directory contents or escalating privileges by subverting group membership lookups. No active exploitation has been identified at time of analysis (SSVC: Exploitation none), though the low attack complexity and network accessibility warrant prompt patching for any LDAP-backed deployment.
Remote content blocking evasion in Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3 lets a crafted SVG image with an unclosed url() in a FuncIRI attribute slip past the remote-image blocker, so external resources load when a victim views a malicious email. This exposes the recipient's IP, mail-client fingerprint, and email-open telemetry to the sender, and per the advisory may aid further information disclosure or privilege escalation. It has a vendor patch and no public exploit identified at time of analysis; EPSS is low (0.31%) and CISA SSVC rates exploitation as none.
IMAP command injection in Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3 enables authenticated remote attackers to disclose information or escalate privileges by exploiting a desynchronization between mail search operations and LITERAL+ byte-count handling. The flaw was reported by Zach Hanley of Horizon3.ai and is classified as CWE-77 (Command Injection), with the vendor releasing patched versions 1.6.18 and 1.7.3 on 2026-08-09. No public exploit code or CISA KEV listing has been identified at time of analysis, though the C:H/I:H CVSS impact and the researcher's track record for producing working exploits elevate the urgency of patching.
Roundcube Webmail's built-in CSS proxy failed to validate responses from external CSS sources, enabling XSS or information disclosure via browser MIME sniffing in versions before 1.6.18 and 1.7.x before 1.7.3. The CVSS 3.1 score of 7.2 with Changed scope reflects that successful exploitation compromises the victim's browser session within the webmail origin. No active exploitation has been confirmed by CISA KEV, and no public proof-of-concept exploit has been identified at the time of analysis.
Remote code execution in Roundcube Webmail (before 1.6.18 and 1.7.x before 1.7.3) is achievable by authenticated remote attackers through the cmd_learn driver of the markasjunk plugin, which passes unsanitized placeholder replacement values derived from user-controlled email content directly to OS command invocations (CWE-78). Exploitation is strictly limited to instances where the markasjunk plugin is installed and configured with the cmd_learn driver - a non-default, operator-configured setup - meaning the broader Roundcube population is unaffected. Vendor-released patches exist for both the 1.6.x and 1.7.x branches; no public exploit has been identified at time of analysis, and the CVE is not listed in the CISA KEV catalog.
Account takeover in Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2 stems from the bundled password plugin trusting a username injected into session data, allowing an attacker to spoof another account's identity when changing a password. The password plugin fails to bind the change operation to the authenticated user, so a spoofed username can redirect a password change to a victim's account. A vendor patch is available; SSVC rates technical impact as total but reports no observed exploitation, and EPSS is low at 0.24%, with no public exploit identified at time of analysis.
Server-Side Request Forgery and information disclosure in Roundcube Webmail (1.6.x before 1.6.17 and 1.7.x before 1.7.2) arises from insufficient CSS sanitization in HTML email messages, allowing an attacker who sends a crafted message to make the mail server fetch attacker-chosen URLs - including internal/local network hosts - via stylesheet links. This is a re-fix of CVE-2026-35540 and CVE-2026-48843, whose prior patches were incomplete, and the 1.7.2 notes explicitly cite 'SSRF bypass via specific local address URLs - two new cases.' No public exploit is identified at time of analysis and the vulnerability is not on CISA KEV; EPSS is low (0.22%, 13th percentile) despite the source-assigned CVSS of 10.0.
Cross-site scripting in Roundcube Webmail 1.6.x (before 1.6.17) and 1.7.x (before 1.7.2) allows remote attackers to inject script that executes in a victim's authenticated webmail session, enabling session hijacking and mail data theft. The flaw is reported by the Ubuntu security team and has a vendor patch, but SSVC lists exploitation as none and there is no public exploit identified at time of analysis. EPSS is low at 0.28% (20th percentile), suggesting limited near-term mass exploitation despite the nominal CVSS 10.0.
CSS injection in Roundcube Webmail 1.6.x (before 1.6.16) and 1.7.x (before 1.7.1) allows remote attackers to bypass the HTML sanitizer by embedding an SVG document with an animate element whose attributeName references style, enabling cross-site scripting style attacks against mail recipients. The flaw carries a CVSS 7.2 (changed scope) with no privileges or user interaction required beyond viewing a crafted message, no public exploit identified at time of analysis, and an EPSS of 0.04% (14th percentile) indicating low predicted exploitation volume despite the trivially-triggerable attack vector.
Code injection in Roundcube Webmail 1.6.x before 1.6.16 and 1.7.x before 1.7.1 allows authenticated attackers to execute arbitrary PHP via the LDAP autovalues option, which previously evaluated user-influenced expressions as code. The upstream maintainers removed code evaluation support entirely in the fixed releases. EPSS sits at 0.05% (14th percentile) and there is no public exploit identified at time of analysis, but the issue is patched and rated CVSS 7.5.
Server-Side Request Forgery and information disclosure in Roundcube Webmail 1.6.14-1.6.15 and 1.7.0 allows remote attackers to force the webmail server to fetch internal network resources by embedding malicious stylesheet links in HTML email messages. The flaw is a regression of CVE-2026-35540 caused by insufficient CSS sanitization, and while no public exploit identified at time of analysis, the EPSS score sits at a low 0.03% (9th percentile) despite the vulnerability being trivially triggerable by sending a crafted email.
Pre-authentication SQL injection in Roundcube Webmail's virtuser_query plugin allows unauthenticated remote attackers to bypass input sanitization through a preg_replace() backslash escape flaw and inject arbitrary SQL against the backing database. Versions 1.6.x prior to 1.6.16 and 1.7.x prior to 1.7.1 are affected. Vendor patches are available, no public exploit identified at time of analysis, and EPSS is low (0.08%), but SSVC rates technical impact as total.
IP address spoofing in Bulwark Webmail versions prior to 1.4.11 allows unauthenticated remote attackers to bypass IP-based rate limiting and forge audit log entries by manipulating the X-Forwarded-For HTTP header. The vulnerability enables brute-force attacks against admin login interfaces and allows malicious actors to mask their true origin in security logs. CVSS 8.7 reflects high integrity impact (VI:H) with network-accessible attack vector requiring no privileges (AV:N, PR:N). No public exploit identified at time of analysis, though exploitation is straightforward given the trust-boundary violation in HTTP header processing.
S/MIME signature verification in Bulwark Webmail prior to 1.4.11 fails to validate certificate trust chains, allowing attackers to forge digitally signed emails using self-signed or untrusted certificates that appear legitimate to recipients. This integrity bypass affects all unauthenticated remote attackers (CVSS:4.0 AV:N/AC:L/PR:N) with high integrity impact. No public exploit identified at time of analysis, though the attack is straightforward given the disabled trust validation (checkChain: false configuration flaw). ENISA EUVD-2026-19478 classifies this as an information disclosure issue, though the primary risk is message authenticity compromise in encrypted email workflows.
Roundcube Webmail before versions 1.5.15 and 1.6.15 fails to properly sanitize SVG content in email messages, allowing the remote image blocking feature to be bypassed via SVG animate elements with malicious attributeName values. This vulnerability enables unauthenticated attackers to bypass access controls and potentially disclose information through image loading, affecting all Roundcube installations using vulnerable versions.
Unsafe deserialization in Roundcube Webmail's Redis/Memcache session handler allows unauthenticated remote attackers to write arbitrary files by crafting malicious session data. Affected versions include all 1.6.x before 1.6.14 and all 1.5.x before 1.5.14. While the CVSS score of 3.7 is low and attack complexity is high, the integrity impact (arbitrary file write) poses a real risk to instances using Redis or Memcache for session storage.
Unauthenticated authentication bypass in Bulwark Webmail versions prior to 1.4.10 allows remote attackers to access and modify user settings without credentials. The vulnerability stems from flawed verifyIdentity() logic that returns true when session cookies are absent, enabling unauthorized manipulation of the /api/settings endpoint through arbitrary header injection. CVSS 8.7 (High) with attack vector network, low complexity, and no privileges required. No public exploit identified at time of analysis, though the authentication bypass mechanism is technically straightforward. Vendor-released patch: version 1.4.10.
Bulwark Webmail prior to version 1.4.10 exposes user plaintext passwords through its session API endpoint, allowing network-positioned attackers to harvest credentials from browser logs, local caches, and network proxies. The /api/auth/session endpoint returns authentication credentials in JSON responses without encryption, creating an information disclosure vulnerability (CWE-312: Cleartext Storage of Sensitive Information). No public exploit identified at time of analysis, though exploitation requires only network access with no authentication (CVSS vector AV:N/AC:L/PR:N), making this a straightforward attack for adversaries monitoring network traffic or accessing browser storage.
Roundcube Webmail contains a critical PHP object deserialization vulnerability (CVE-2025-49113, CVSS 9.9) that allows authenticated users to achieve remote code execution through a crafted upload URL. With EPSS 90.4% and KEV listing, this vulnerability in one of the most widely deployed open-source webmail platforms enables any email user to compromise the mail server, accessing all hosted mailboxes.
A Cross-Site Scripting vulnerability in Roundcube through 1.5.7 and 1.6.x through 1.6.7 allows a remote attacker to steal and send emails of a victim via a crafted e-mail message that abuses a. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Roundcube Webmail before 1.5.7 and 1.6.x before 1.6.7 allows XSS via SVG animate attributes. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
Roundcube before 1.4.15, 1.5.x before 1.5.5, and 1.6.x before 1.6.4 allows stored XSS via an HTML e-mail message with a crafted SVG document because of program/lib/Roundcube/rcube_washtml.php. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available.
Roundcube before 1.4.14, 1.5.x before 1.5.4, and 1.6.x before 1.6.3 allows XSS via text/plain e-mail messages with crafted links because of program/lib/Roundcube/rcube_string_replacer.php behavior. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Cross-Site Scripting (XSS) vulnerability could allow attackers to inject malicious scripts into web pages viewed by other users.
Roundcube before 1.3.17 and 1.4.x before 1.4.12 is prone to a potential SQL injection via search or search_params. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
An XSS issue was discovered in Roundcube Webmail before 1.2.13, 1.3.x before 1.3.16, and 1.4.x before 1.4.10. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Cross-Site Scripting (XSS) vulnerability could allow attackers to inject malicious scripts into web pages viewed by other users.
An issue was discovered in Roundcube Webmail before 1.3.12 and 1.4.x before 1.4.5. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
rcube_image.php in Roundcube Webmail before 1.4.4 allows attackers to execute arbitrary code via shell metacharacters in a configuration setting for im_convert_path or im_identify_path. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
Roundcube Webmail before 1.1.10, 1.2.x before 1.2.7, and 1.3.x before 1.3.3 allows unauthorized access to arbitrary files on the host's filesystem, including configuration files, as exploited in the. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Actively exploited in the wild (cisa kev) and public exploit code available.
Token exfiltration in Roundcube Webmail's modoboa password driver allows authenticated users to redirect server-side Modoboa API requests - including the admin API credential - to attacker-controlled hosts by manipulating session IMAP host data. Versions before 1.6.18 and 1.7.x before 1.7.3 are affected, but only deployments using the password plugin with the modoboa driver are exposed. The leaked Modoboa API token could grant persistent administrative access to the Modoboa mail platform, enabling enumeration and modification of all hosted mail accounts; no public exploit or CISA KEV listing is identified at time of analysis.
CSS sanitization bypass in Roundcube Webmail before 1.6.18 and 1.7.3 enables unauthenticated remote attackers to trigger server-side HTTP requests to RFC6598 shared address space (100.64.0.0/10) and IPv6 link-local addresses (fe80::/10) by embedding malicious stylesheet URLs in HTML email. This is the fourth iteration in a chain of incomplete SSRF fixes - following CVE-2026-35540, CVE-2026-48843, and CVE-2026-62643 - with each prior fix failing to cover the full local address space, indicating a systemic gap in the blocklist-based sanitization approach. No public exploit or active exploitation (CISA KEV) has been identified at time of analysis; vendor-released patches 1.6.18 and 1.7.3 are available as of 2026-08-09.
Sieve script injection in Roundcube Webmail's managesieve plugin allows authenticated users to bypass the administrator-configured `managesieve_disabled_actions` restriction by embedding unquoted special characters in a filter rule name. Affected branches are 1.6.x before 1.6.18 and 1.7.x before 1.7.3; instances without the managesieve plugin are not affected. No public exploit code has been identified at time of analysis, and the vulnerability is not listed in the CISA KEV catalog.
Remote image blocking bypass in Roundcube Webmail (all versions before 1.6.18 and 1.7.x before 1.7.3) allows network-based attackers to defeat content security filters through crafted SVG animate elements, with potential for user metadata disclosure and privilege escalation. The sanitizer's failure to validate the SVG animate `by` attribute permits malicious email content to trigger outbound resource loads that the webmail's blocking controls were designed to prevent. Vendor-released patches 1.6.18 and 1.7.3 are confirmed available; no public exploit code or active exploitation has been identified at time of analysis.
Stored XSS in Roundcube Webmail's 'Add to address book' feature allows a low-privileged authenticated attacker to inject persistent malicious scripts that execute in the browser sessions of other users who trigger the affected action. Affected versions span the 1.6.x branch before 1.6.18 and the 1.7.x branch before 1.7.3, both patched on 2026-08-09 per vendor advisory. No public exploit code or CISA KEV listing has been identified at time of analysis, though stored XSS in webmail clients historically enables session hijacking and unauthorized mail access with low attacker effort.
Roundcube Webmail's TNEF (winmail.dat) decoder enters an infinite loop when processing a specially crafted TNEF attachment, causing denial of service for users on affected installations. Versions before 1.6.17 and 1.7.x before 1.7.2 are confirmed affected per the vendor advisory issued 2026-07-05. No public exploit code and no active exploitation (CISA KEV) have been identified; the CVSS vector confirms user interaction is required, limiting automatable mass exploitation.
Denial of service in Roundcube Webmail's TNEF decoder allows remote senders to crash the webmail parser by embedding a crafted compressed-RTF size field inside a winmail.dat attachment. Affected versions are all Roundcube Webmail releases before 1.6.17 and 1.7.x before 1.7.2. Release notes confirm the defect manifests as an infinite loop in the TNEF parser, meaning repeated delivery of malicious emails could degrade server availability for affected users. No public exploit has been identified at time of analysis, and this vulnerability is not listed in CISA KEV.
Stored XSS and HTML/CSS injection in Roundcube Webmail 1.6.x and 1.7.x allows an authenticated attacker to plant a malicious payload in a draft message's subject field, which then executes in the browsers of other users when they encounter the draft restore dialog on a shared mailbox. Fixed in versions 1.6.16 and 1.7.1 per vendor advisory published 2026-05-24. No public exploit identified at time of analysis, and EPSS sits at 0.03% (10th percentile), indicating minimal observed exploitation interest.
Pre-authentication arbitrary file deletion in Roundcube Webmail 1.6.x (before 1.6.16) and 1.7.x (before 1.7.1) is achievable by unauthenticated network attackers via session poisoning of Redis or Memcache storage backends. The root cause (CWE-669: Incorrect Resource Transfer Between Spheres) lies in the application improperly trusting session data read from an external cache tier, allowing crafted entries to bypass pre-authentication controls and trigger file deletion operations. No public exploit has been identified at time of analysis, and EPSS stands at 0.06%, though Roundcube installations are historically targeted by espionage-motivated threat actors and patching is strongly recommended.
Remote image blocking in Roundcube Webmail 1.6.x and 1.7.x can be silently bypassed by embedding a crafted CSS var() expression in an HTML email, causing the victim's browser to fetch attacker-controlled external resources despite the privacy control being active. This leads to information disclosure - including IP address leakage and email-open tracking - and potential access-control bypass. No public exploit has been identified at time of analysis and EPSS is very low (0.03%), but SSVC rates this 'Automatable: yes,' making mass-scale email tracking campaigns feasible against unpatched Roundcube deployments.
Remote image blocking bypass in Roundcube Webmail allows unauthenticated network attackers to embed HTML email image tags pointing to local or private network destinations, causing the server to fetch those resources despite the 'block remote images' policy being active. Affected versions are 1.6.14 through 1.6.15 and 1.7.0, with vendor-released patches 1.6.16 and 1.7.1 available since May 2026 per the official advisory. No public exploit has been identified at time of analysis and EPSS is very low at 0.03%, though SSVC rates technical impact as total - a notable discrepancy that warrants attention for deployments where the mail server has internal network access.
Bulwark Webmail versions prior to 1.4.11 fail to enforce Content-Security-Policy headers, allowing unauthenticated attackers to execute arbitrary JavaScript through crafted email HTML. The reverse proxy incorrectly uses Content-Security-Policy-Report-Only instead of the enforcing Content-Security-Policy header, enabling XSS attacks that can steal session tokens or perform unauthorized actions on behalf of users. This vulnerability requires user interaction (opening a malicious email) and affects only the client-side context with limited scope, reflected in the CVSS 5.3 score; no public exploit code or active exploitation has been reported.
Roundcube Webmail before versions 1.5.14 and 1.6.14 allows unauthenticated remote attackers to bypass CSS-based security mitigations in HTML email rendering by injecting !important declarations, enabling potential integrity attacks such as phishing or UI redressing. The vulnerability stems from insufficient CSS sanitization when processing HTML email messages, with no authentication required and minimal attack complexity.
Roundcube Webmail before versions 1.5.14 and 1.6.14 allows unauthenticated remote attackers to bypass the remote image blocking feature via SVG content containing animate attributes in email messages, leading to information disclosure or access control bypass. The vulnerability has a CVSS score of 5.3 (moderate severity) with low attack complexity and no authentication required, though the confidentiality impact is limited.
Roundcube Webmail before versions 1.5.14 and 1.6.14 allows unauthenticated remote attackers to bypass the remote image blocking security feature through a crafted background attribute in a BODY element of an email message, enabling information disclosure via tracking pixels or other image-based reconnaissance. The vulnerability affects all versions prior to 1.5.14 and 1.6.x versions before 1.6.14, with CVSS 5.3 (medium severity) reflecting the low confidentiality impact but lack of authentication requirements.
Type confusion in Roundcube Webmail's password plugin allows authenticated users to change passwords without knowing the old password, affecting versions before 1.5.14 and 1.6.14. The vulnerability stems from incorrect password comparison logic that enables privilege escalation within an authenticated session. While the CVSS score of 4.2 reflects moderate severity and the requirement for prior authentication, the impact is direct account compromise for any authenticated user.
Roundcube Webmail 1.6.0 through 1.6.13 allows Server-Side Request Forgery (SSRF) and Information Disclosure through insufficient CSS sanitization in HTML email messages, enabling attackers to craft malicious stylesheets that reference local network hosts. The vulnerability affects all instances processing HTML emails with external stylesheet links, and does not require authentication due to the unauthenticated attack vector (AV:N, PR:N in CVSS). Vendor-released patch: versions 1.6.14, 1.7-rc5, and later.
Cross-site scripting (XSS) in Roundcube Webmail before versions 1.5.14 and 1.6.14 allows remote attackers to inject malicious scripts via insufficient HTML sanitization in text/html attachment preview mode. An authenticated user must preview a malicious text/html attachment to trigger the vulnerability, enabling attackers to steal session cookies, redirect users, or perform actions on behalf of the victim. No public exploit code or active exploitation has been confirmed; EPSS score of 6.1 reflects moderate real-world risk given the user interaction requirement.
Roundcube Webmail before versions 1.5.14 and 1.6.14 allows authenticated remote attackers to conduct IMAP injection attacks or bypass CSRF protections via unsanitized IMAP SEARCH command arguments. The vulnerability requires user interaction (high complexity) and authenticated access, resulting in limited integrity impact without confidentiality or availability compromise. No public exploit code or active exploitation has been confirmed at time of analysis.
Cross-Site Scripting (XSS) vulnerability in Roundcube Webmail 1.6.9 allows remote authenticated users to upload a malicious file as an email attachment, leading to the triggering of the XSS by. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
A Cross-Site Scripting vulnerability in rcmail_action_mail_get->run() in Roundcube through 1.5.7 and 1.6.x through 1.6.7 allows a remote attacker to steal and send emails of a victim via a malicious. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Roundcube Webmail before 1.5.7 and 1.6.x before 1.6.7 on Windows allows command injection via im_convert_path and im_identify_path. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Roundcube Webmail before 1.5.7 and 1.6.x before 1.6.7 allows XSS via list columns from user preferences. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Cross-Site Scripting (XSS) vulnerability could allow attackers to inject malicious scripts into web pages viewed by other users.
Roundcube 1.5.x before 1.5.6 and 1.6.x before 1.6.5 allows XSS via a Content-Type or Content-Disposition header (used for attachment preview or download). Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Cross-Site Scripting (XSS) vulnerability could allow attackers to inject malicious scripts into web pages viewed by other users.
The Email Viewer in RainLoop through 1.6.0 allows XSS via a crafted email message. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Roundcube before 1.3.17 and 1.4.x before 1.4.12 is prone to XSS in handling an attachment's filename extension when displaying a MIME type warning message. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Cross-Site Scripting (XSS) vulnerability could allow attackers to inject malicious scripts into web pages viewed by other users.
Roundcube before 1.4.11 allows XSS via crafted Cascading Style Sheets (CSS) token sequences during HTML email rendering. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. This Cross-Site Scripting (XSS) vulnerability could allow attackers to inject malicious scripts into web pages viewed by other users.
Roundcube Webmail before 1.3.15 and 1.4.8 allows stored XSS in HTML messages during message display via a crafted SVG document. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Cross-Site Scripting (XSS) vulnerability could allow attackers to inject malicious scripts into web pages viewed by other users.
An issue was discovered in Roundcube Webmail before 1.2.11, 1.3.x before 1.3.14, and 1.4.x before 1.4.7. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Cross-Site Scripting (XSS) vulnerability could allow attackers to inject malicious scripts into web pages viewed by other users.
An issue was discovered in Roundcube Webmail before 1.3.12 and 1.4.x before 1.4.5. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Cross-Site Scripting (XSS) vulnerability could allow attackers to inject malicious scripts into web pages viewed by other users.
Roundcube Webmail before 1.4.4 allows attackers to include local files and execute code via directory traversal in a plugin name to rcube_plugin_api.php. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
An issue was discovered in Roundcube Webmail before 1.4.4. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
An issue was discovered in Roundcube Webmail before 1.4.4. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
Roundcube Webmail through 1.3.9 mishandles Punycode xn-- domain names, leading to homograph attacks. Rated high severity (CVSS 7.4), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
In Roundcube Webmail before 1.3.10, an attacker in possession of S/MIME or PGP encrypted emails can wrap them as sub-parts within a crafted multipart email. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Mailtraq WebMail version 2.17.7.3550 has Persistent Cross Site Scripting (XSS) via the body of an e-mail message. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
steps/mail/func.inc in Roundcube before 1.3.8 has XSS via crafted use of <svg><style>, as demonstrated by an onload attribute in a BODY element, within an HTML attachment. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Roundcube before 1.3.7 mishandles GnuPG MDC integrity-protection warnings, which makes it easier for attackers to obtain sensitive information, a related issue to CVE-2017-17688. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
In Roundcube from versions 1.2.0 to 1.3.5, with the archive plugin enabled and configured, it's possible to exploit the unsanitized, user-controlled "_uid" parameter (in an archive.php. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
roundcube version 1.3.4 and earlier contains an Insecure Permissions vulnerability in enigma plugin that can result in exfiltration of gpg private key. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
AdminPanel in AfterLogic WebMail 7.7 and Aurora 7.7.5 has XSS via the txtDomainName field to adminpanel/modules/pro/inc/ajax.php during addition of a domain. Rated medium severity (CVSS 4.8), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Roundcube Webmail 1.1.x before 1.1.2 allows remote attackers to obtain sensitive information by reading files in the (1) config, (2) temp, or (3) logs directory. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Exposure of Sensitive Information vulnerability could allow attackers to access sensitive data that should not be disclosed.
program/steps/addressbook/photo.inc in Roundcube Webmail before 1.0.6 and 1.1.x before 1.1.2 allows remote authenticated users to read arbitrary files via the _alt parameter when uploading a vCard. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. This Exposure of Sensitive Information vulnerability could allow attackers to access sensitive data that should not be disclosed.
Cross-site scripting (XSS) vulnerability in program/include/rcmail.php in Roundcube Webmail 1.1.x before 1.1.2 allows remote attackers to inject arbitrary web script or HTML via the _mbox parameter. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Roundcube Webmail allows arbitrary password resets by authenticated users. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Cross-site scripting (XSS) vulnerability in Roundcube Webmail before 1.0.9 and 1.1.x before 1.1.5 allows remote attackers to inject arbitrary web script or HTML via a crafted SVG, a different. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Cross-site scripting (XSS) vulnerability in Roundcube Webmail before 1.0.9 and 1.1.x before 1.1.5 allows remote attackers to inject arbitrary web script or HTML via a crafted SVG, a different. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
rcube_utils.php in Roundcube before 1.1.8 and 1.2.x before 1.2.4 is susceptible to a cross-site scripting vulnerability via a crafted Cascading Style Sheets (CSS) token sequence within an SVG element. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Cross-Site Scripting (XSS) vulnerability could allow attackers to inject malicious scripts into web pages viewed by other users.
Multiple buffer overflows in the DBMail driver in the Password plugin in Roundcube before 1.1.0 allow remote attackers to have unspecified impact via the (1) password or (2) username. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
The DBMail driver in the Password plugin in Roundcube before 1.1.0 allows remote attackers to execute arbitrary commands via shell metacharacters in the password. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Cross-site scripting (XSS) vulnerability in Roundcube Webmail before 1.2.0 allows remote attackers to inject arbitrary web script or HTML via the href attribute in an area tag in an e-mail message. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
steps/mail/sendmail.inc in Roundcube before 1.1.7 and 1.2.x before 1.2.3, when no SMTP server is configured and the sendmail program is enabled, does not properly restrict the use of custom. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable. Public exploit code available and EPSS exploitation probability 38.3%.
Cross-site request forgery (CSRF) vulnerability in Roundcube Webmail before 1.1.5 allows remote attackers to hijack the authentication of users for requests that download attachments and cause a. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Cross-site scripting (XSS) vulnerability in program/include/rcmail.php in Roundcube before 1.0.6 and 1.1.x before 1.1.2 allows remote attackers to inject arbitrary web script or HTML via the _mbox. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
Cross-site scripting (XSS) vulnerability in program/js/app.js in Roundcube webmail before 1.0.7 and 1.1.x before 1.1.3 allows remote authenticated users to inject arbitrary web script or HTML via the. Rated low severity (CVSS 3.5), this vulnerability is remotely exploitable. No vendor patch available.
program/lib/Roundcube/rcube_washtml.php in Roundcube before 1.0.5 does not properly quote strings, which allows remote attackers to conduct cross-site scripting (XSS) attacks via the style attribute. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable. Public exploit code available.
Multiple cross-site request forgery (CSRF) vulnerabilities in Roundcube Webmail before 1.0.4 allow remote attackers to hijack the authentication of unspecified victims via unknown vectors, related to. Rated medium severity (CVSS 6.8), this vulnerability is remotely exploitable.
Absolute path traversal vulnerability in steps/mail/sendmail.inc in Roundcube Webmail before 0.7.3 and 0.8.x before 0.8.6 allows remote attackers to read arbitrary files via a full pathname in the. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available.
steps/utils/save_pref.inc in Roundcube webmail before 0.8.7 and 0.9.x before 0.9.5 allows remote attackers to modify configuration settings via the _session parameter, which can be leveraged to read. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. This SQL Injection vulnerability could allow attackers to execute arbitrary SQL commands against the database.
Cross-site scripting (XSS) vulnerability in Roundcube webmail 1.0-git allows remote authenticated users to inject arbitrary web script or HTML via the Name field of an addressbook group. Rated low severity (CVSS 3.5), this vulnerability is remotely exploitable. Public exploit code available and no vendor patch available.
Multiple cross-site scripting (XSS) vulnerabilities in Roundcube webmail before 0.9.3 allow user-assisted remote attackers to inject arbitrary web script or HTML via the body of a message visited in. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable. Public exploit code available and no vendor patch available.
Cross-site scripting (XSS) vulnerability in Roundcube Webmail before 0.8.5 allows remote attackers to inject arbitrary web script or HTML via a (1) data:text or (2) vbscript link. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable. No vendor patch available.
LDAP filter injection in Roundcube Webmail arises from unescaped substitution variables (`%u`, `%fu`, `%d`) embedded directly into LDAP `search_filter` configuration strings, affecting all 1.6.x releases before 1.6.18 and 1.7.x releases before 1.7.3. An authenticated user whose login credentials contain crafted LDAP metacharacters can manipulate server-side directory queries, potentially disclosing LDAP directory contents or escalating privileges by subverting group membership lookups. No active exploitation has been identified at time of analysis (SSVC: Exploitation none), though the low attack complexity and network accessibility warrant prompt patching for any LDAP-backed deployment.
Remote content blocking evasion in Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3 lets a crafted SVG image with an unclosed url() in a FuncIRI attribute slip past the remote-image blocker, so external resources load when a victim views a malicious email. This exposes the recipient's IP, mail-client fingerprint, and email-open telemetry to the sender, and per the advisory may aid further information disclosure or privilege escalation. It has a vendor patch and no public exploit identified at time of analysis; EPSS is low (0.31%) and CISA SSVC rates exploitation as none.
IMAP command injection in Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3 enables authenticated remote attackers to disclose information or escalate privileges by exploiting a desynchronization between mail search operations and LITERAL+ byte-count handling. The flaw was reported by Zach Hanley of Horizon3.ai and is classified as CWE-77 (Command Injection), with the vendor releasing patched versions 1.6.18 and 1.7.3 on 2026-08-09. No public exploit code or CISA KEV listing has been identified at time of analysis, though the C:H/I:H CVSS impact and the researcher's track record for producing working exploits elevate the urgency of patching.
Roundcube Webmail's built-in CSS proxy failed to validate responses from external CSS sources, enabling XSS or information disclosure via browser MIME sniffing in versions before 1.6.18 and 1.7.x before 1.7.3. The CVSS 3.1 score of 7.2 with Changed scope reflects that successful exploitation compromises the victim's browser session within the webmail origin. No active exploitation has been confirmed by CISA KEV, and no public proof-of-concept exploit has been identified at the time of analysis.
Remote code execution in Roundcube Webmail (before 1.6.18 and 1.7.x before 1.7.3) is achievable by authenticated remote attackers through the cmd_learn driver of the markasjunk plugin, which passes unsanitized placeholder replacement values derived from user-controlled email content directly to OS command invocations (CWE-78). Exploitation is strictly limited to instances where the markasjunk plugin is installed and configured with the cmd_learn driver - a non-default, operator-configured setup - meaning the broader Roundcube population is unaffected. Vendor-released patches exist for both the 1.6.x and 1.7.x branches; no public exploit has been identified at time of analysis, and the CVE is not listed in the CISA KEV catalog.
Account takeover in Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2 stems from the bundled password plugin trusting a username injected into session data, allowing an attacker to spoof another account's identity when changing a password. The password plugin fails to bind the change operation to the authenticated user, so a spoofed username can redirect a password change to a victim's account. A vendor patch is available; SSVC rates technical impact as total but reports no observed exploitation, and EPSS is low at 0.24%, with no public exploit identified at time of analysis.
Server-Side Request Forgery and information disclosure in Roundcube Webmail (1.6.x before 1.6.17 and 1.7.x before 1.7.2) arises from insufficient CSS sanitization in HTML email messages, allowing an attacker who sends a crafted message to make the mail server fetch attacker-chosen URLs - including internal/local network hosts - via stylesheet links. This is a re-fix of CVE-2026-35540 and CVE-2026-48843, whose prior patches were incomplete, and the 1.7.2 notes explicitly cite 'SSRF bypass via specific local address URLs - two new cases.' No public exploit is identified at time of analysis and the vulnerability is not on CISA KEV; EPSS is low (0.22%, 13th percentile) despite the source-assigned CVSS of 10.0.
Cross-site scripting in Roundcube Webmail 1.6.x (before 1.6.17) and 1.7.x (before 1.7.2) allows remote attackers to inject script that executes in a victim's authenticated webmail session, enabling session hijacking and mail data theft. The flaw is reported by the Ubuntu security team and has a vendor patch, but SSVC lists exploitation as none and there is no public exploit identified at time of analysis. EPSS is low at 0.28% (20th percentile), suggesting limited near-term mass exploitation despite the nominal CVSS 10.0.
CSS injection in Roundcube Webmail 1.6.x (before 1.6.16) and 1.7.x (before 1.7.1) allows remote attackers to bypass the HTML sanitizer by embedding an SVG document with an animate element whose attributeName references style, enabling cross-site scripting style attacks against mail recipients. The flaw carries a CVSS 7.2 (changed scope) with no privileges or user interaction required beyond viewing a crafted message, no public exploit identified at time of analysis, and an EPSS of 0.04% (14th percentile) indicating low predicted exploitation volume despite the trivially-triggerable attack vector.
Code injection in Roundcube Webmail 1.6.x before 1.6.16 and 1.7.x before 1.7.1 allows authenticated attackers to execute arbitrary PHP via the LDAP autovalues option, which previously evaluated user-influenced expressions as code. The upstream maintainers removed code evaluation support entirely in the fixed releases. EPSS sits at 0.05% (14th percentile) and there is no public exploit identified at time of analysis, but the issue is patched and rated CVSS 7.5.
Server-Side Request Forgery and information disclosure in Roundcube Webmail 1.6.14-1.6.15 and 1.7.0 allows remote attackers to force the webmail server to fetch internal network resources by embedding malicious stylesheet links in HTML email messages. The flaw is a regression of CVE-2026-35540 caused by insufficient CSS sanitization, and while no public exploit identified at time of analysis, the EPSS score sits at a low 0.03% (9th percentile) despite the vulnerability being trivially triggerable by sending a crafted email.
Pre-authentication SQL injection in Roundcube Webmail's virtuser_query plugin allows unauthenticated remote attackers to bypass input sanitization through a preg_replace() backslash escape flaw and inject arbitrary SQL against the backing database. Versions 1.6.x prior to 1.6.16 and 1.7.x prior to 1.7.1 are affected. Vendor patches are available, no public exploit identified at time of analysis, and EPSS is low (0.08%), but SSVC rates technical impact as total.
IP address spoofing in Bulwark Webmail versions prior to 1.4.11 allows unauthenticated remote attackers to bypass IP-based rate limiting and forge audit log entries by manipulating the X-Forwarded-For HTTP header. The vulnerability enables brute-force attacks against admin login interfaces and allows malicious actors to mask their true origin in security logs. CVSS 8.7 reflects high integrity impact (VI:H) with network-accessible attack vector requiring no privileges (AV:N, PR:N). No public exploit identified at time of analysis, though exploitation is straightforward given the trust-boundary violation in HTTP header processing.
S/MIME signature verification in Bulwark Webmail prior to 1.4.11 fails to validate certificate trust chains, allowing attackers to forge digitally signed emails using self-signed or untrusted certificates that appear legitimate to recipients. This integrity bypass affects all unauthenticated remote attackers (CVSS:4.0 AV:N/AC:L/PR:N) with high integrity impact. No public exploit identified at time of analysis, though the attack is straightforward given the disabled trust validation (checkChain: false configuration flaw). ENISA EUVD-2026-19478 classifies this as an information disclosure issue, though the primary risk is message authenticity compromise in encrypted email workflows.
Roundcube Webmail before versions 1.5.15 and 1.6.15 fails to properly sanitize SVG content in email messages, allowing the remote image blocking feature to be bypassed via SVG animate elements with malicious attributeName values. This vulnerability enables unauthenticated attackers to bypass access controls and potentially disclose information through image loading, affecting all Roundcube installations using vulnerable versions.
Unsafe deserialization in Roundcube Webmail's Redis/Memcache session handler allows unauthenticated remote attackers to write arbitrary files by crafting malicious session data. Affected versions include all 1.6.x before 1.6.14 and all 1.5.x before 1.5.14. While the CVSS score of 3.7 is low and attack complexity is high, the integrity impact (arbitrary file write) poses a real risk to instances using Redis or Memcache for session storage.
Unauthenticated authentication bypass in Bulwark Webmail versions prior to 1.4.10 allows remote attackers to access and modify user settings without credentials. The vulnerability stems from flawed verifyIdentity() logic that returns true when session cookies are absent, enabling unauthorized manipulation of the /api/settings endpoint through arbitrary header injection. CVSS 8.7 (High) with attack vector network, low complexity, and no privileges required. No public exploit identified at time of analysis, though the authentication bypass mechanism is technically straightforward. Vendor-released patch: version 1.4.10.
Bulwark Webmail prior to version 1.4.10 exposes user plaintext passwords through its session API endpoint, allowing network-positioned attackers to harvest credentials from browser logs, local caches, and network proxies. The /api/auth/session endpoint returns authentication credentials in JSON responses without encryption, creating an information disclosure vulnerability (CWE-312: Cleartext Storage of Sensitive Information). No public exploit identified at time of analysis, though exploitation requires only network access with no authentication (CVSS vector AV:N/AC:L/PR:N), making this a straightforward attack for adversaries monitoring network traffic or accessing browser storage.
Roundcube Webmail contains a critical PHP object deserialization vulnerability (CVE-2025-49113, CVSS 9.9) that allows authenticated users to achieve remote code execution through a crafted upload URL. With EPSS 90.4% and KEV listing, this vulnerability in one of the most widely deployed open-source webmail platforms enables any email user to compromise the mail server, accessing all hosted mailboxes.
A Cross-Site Scripting vulnerability in Roundcube through 1.5.7 and 1.6.x through 1.6.7 allows a remote attacker to steal and send emails of a victim via a crafted e-mail message that abuses a. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Roundcube Webmail before 1.5.7 and 1.6.x before 1.6.7 allows XSS via SVG animate attributes. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
Roundcube before 1.4.15, 1.5.x before 1.5.5, and 1.6.x before 1.6.4 allows stored XSS via an HTML e-mail message with a crafted SVG document because of program/lib/Roundcube/rcube_washtml.php. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available.
Roundcube before 1.4.14, 1.5.x before 1.5.4, and 1.6.x before 1.6.3 allows XSS via text/plain e-mail messages with crafted links because of program/lib/Roundcube/rcube_string_replacer.php behavior. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Cross-Site Scripting (XSS) vulnerability could allow attackers to inject malicious scripts into web pages viewed by other users.
Roundcube before 1.3.17 and 1.4.x before 1.4.12 is prone to a potential SQL injection via search or search_params. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
An XSS issue was discovered in Roundcube Webmail before 1.2.13, 1.3.x before 1.3.16, and 1.4.x before 1.4.10. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Cross-Site Scripting (XSS) vulnerability could allow attackers to inject malicious scripts into web pages viewed by other users.
An issue was discovered in Roundcube Webmail before 1.3.12 and 1.4.x before 1.4.5. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
rcube_image.php in Roundcube Webmail before 1.4.4 allows attackers to execute arbitrary code via shell metacharacters in a configuration setting for im_convert_path or im_identify_path. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
Roundcube Webmail before 1.1.10, 1.2.x before 1.2.7, and 1.3.x before 1.3.3 allows unauthorized access to arbitrary files on the host's filesystem, including configuration files, as exploited in the. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Actively exploited in the wild (cisa kev) and public exploit code available.
Token exfiltration in Roundcube Webmail's modoboa password driver allows authenticated users to redirect server-side Modoboa API requests - including the admin API credential - to attacker-controlled hosts by manipulating session IMAP host data. Versions before 1.6.18 and 1.7.x before 1.7.3 are affected, but only deployments using the password plugin with the modoboa driver are exposed. The leaked Modoboa API token could grant persistent administrative access to the Modoboa mail platform, enabling enumeration and modification of all hosted mail accounts; no public exploit or CISA KEV listing is identified at time of analysis.
CSS sanitization bypass in Roundcube Webmail before 1.6.18 and 1.7.3 enables unauthenticated remote attackers to trigger server-side HTTP requests to RFC6598 shared address space (100.64.0.0/10) and IPv6 link-local addresses (fe80::/10) by embedding malicious stylesheet URLs in HTML email. This is the fourth iteration in a chain of incomplete SSRF fixes - following CVE-2026-35540, CVE-2026-48843, and CVE-2026-62643 - with each prior fix failing to cover the full local address space, indicating a systemic gap in the blocklist-based sanitization approach. No public exploit or active exploitation (CISA KEV) has been identified at time of analysis; vendor-released patches 1.6.18 and 1.7.3 are available as of 2026-08-09.
Sieve script injection in Roundcube Webmail's managesieve plugin allows authenticated users to bypass the administrator-configured `managesieve_disabled_actions` restriction by embedding unquoted special characters in a filter rule name. Affected branches are 1.6.x before 1.6.18 and 1.7.x before 1.7.3; instances without the managesieve plugin are not affected. No public exploit code has been identified at time of analysis, and the vulnerability is not listed in the CISA KEV catalog.
Remote image blocking bypass in Roundcube Webmail (all versions before 1.6.18 and 1.7.x before 1.7.3) allows network-based attackers to defeat content security filters through crafted SVG animate elements, with potential for user metadata disclosure and privilege escalation. The sanitizer's failure to validate the SVG animate `by` attribute permits malicious email content to trigger outbound resource loads that the webmail's blocking controls were designed to prevent. Vendor-released patches 1.6.18 and 1.7.3 are confirmed available; no public exploit code or active exploitation has been identified at time of analysis.
Stored XSS in Roundcube Webmail's 'Add to address book' feature allows a low-privileged authenticated attacker to inject persistent malicious scripts that execute in the browser sessions of other users who trigger the affected action. Affected versions span the 1.6.x branch before 1.6.18 and the 1.7.x branch before 1.7.3, both patched on 2026-08-09 per vendor advisory. No public exploit code or CISA KEV listing has been identified at time of analysis, though stored XSS in webmail clients historically enables session hijacking and unauthorized mail access with low attacker effort.
Roundcube Webmail's TNEF (winmail.dat) decoder enters an infinite loop when processing a specially crafted TNEF attachment, causing denial of service for users on affected installations. Versions before 1.6.17 and 1.7.x before 1.7.2 are confirmed affected per the vendor advisory issued 2026-07-05. No public exploit code and no active exploitation (CISA KEV) have been identified; the CVSS vector confirms user interaction is required, limiting automatable mass exploitation.
Denial of service in Roundcube Webmail's TNEF decoder allows remote senders to crash the webmail parser by embedding a crafted compressed-RTF size field inside a winmail.dat attachment. Affected versions are all Roundcube Webmail releases before 1.6.17 and 1.7.x before 1.7.2. Release notes confirm the defect manifests as an infinite loop in the TNEF parser, meaning repeated delivery of malicious emails could degrade server availability for affected users. No public exploit has been identified at time of analysis, and this vulnerability is not listed in CISA KEV.
Stored XSS and HTML/CSS injection in Roundcube Webmail 1.6.x and 1.7.x allows an authenticated attacker to plant a malicious payload in a draft message's subject field, which then executes in the browsers of other users when they encounter the draft restore dialog on a shared mailbox. Fixed in versions 1.6.16 and 1.7.1 per vendor advisory published 2026-05-24. No public exploit identified at time of analysis, and EPSS sits at 0.03% (10th percentile), indicating minimal observed exploitation interest.
Pre-authentication arbitrary file deletion in Roundcube Webmail 1.6.x (before 1.6.16) and 1.7.x (before 1.7.1) is achievable by unauthenticated network attackers via session poisoning of Redis or Memcache storage backends. The root cause (CWE-669: Incorrect Resource Transfer Between Spheres) lies in the application improperly trusting session data read from an external cache tier, allowing crafted entries to bypass pre-authentication controls and trigger file deletion operations. No public exploit has been identified at time of analysis, and EPSS stands at 0.06%, though Roundcube installations are historically targeted by espionage-motivated threat actors and patching is strongly recommended.
Remote image blocking in Roundcube Webmail 1.6.x and 1.7.x can be silently bypassed by embedding a crafted CSS var() expression in an HTML email, causing the victim's browser to fetch attacker-controlled external resources despite the privacy control being active. This leads to information disclosure - including IP address leakage and email-open tracking - and potential access-control bypass. No public exploit has been identified at time of analysis and EPSS is very low (0.03%), but SSVC rates this 'Automatable: yes,' making mass-scale email tracking campaigns feasible against unpatched Roundcube deployments.
Remote image blocking bypass in Roundcube Webmail allows unauthenticated network attackers to embed HTML email image tags pointing to local or private network destinations, causing the server to fetch those resources despite the 'block remote images' policy being active. Affected versions are 1.6.14 through 1.6.15 and 1.7.0, with vendor-released patches 1.6.16 and 1.7.1 available since May 2026 per the official advisory. No public exploit has been identified at time of analysis and EPSS is very low at 0.03%, though SSVC rates technical impact as total - a notable discrepancy that warrants attention for deployments where the mail server has internal network access.
Bulwark Webmail versions prior to 1.4.11 fail to enforce Content-Security-Policy headers, allowing unauthenticated attackers to execute arbitrary JavaScript through crafted email HTML. The reverse proxy incorrectly uses Content-Security-Policy-Report-Only instead of the enforcing Content-Security-Policy header, enabling XSS attacks that can steal session tokens or perform unauthorized actions on behalf of users. This vulnerability requires user interaction (opening a malicious email) and affects only the client-side context with limited scope, reflected in the CVSS 5.3 score; no public exploit code or active exploitation has been reported.
Roundcube Webmail before versions 1.5.14 and 1.6.14 allows unauthenticated remote attackers to bypass CSS-based security mitigations in HTML email rendering by injecting !important declarations, enabling potential integrity attacks such as phishing or UI redressing. The vulnerability stems from insufficient CSS sanitization when processing HTML email messages, with no authentication required and minimal attack complexity.
Roundcube Webmail before versions 1.5.14 and 1.6.14 allows unauthenticated remote attackers to bypass the remote image blocking feature via SVG content containing animate attributes in email messages, leading to information disclosure or access control bypass. The vulnerability has a CVSS score of 5.3 (moderate severity) with low attack complexity and no authentication required, though the confidentiality impact is limited.
Roundcube Webmail before versions 1.5.14 and 1.6.14 allows unauthenticated remote attackers to bypass the remote image blocking security feature through a crafted background attribute in a BODY element of an email message, enabling information disclosure via tracking pixels or other image-based reconnaissance. The vulnerability affects all versions prior to 1.5.14 and 1.6.x versions before 1.6.14, with CVSS 5.3 (medium severity) reflecting the low confidentiality impact but lack of authentication requirements.
Type confusion in Roundcube Webmail's password plugin allows authenticated users to change passwords without knowing the old password, affecting versions before 1.5.14 and 1.6.14. The vulnerability stems from incorrect password comparison logic that enables privilege escalation within an authenticated session. While the CVSS score of 4.2 reflects moderate severity and the requirement for prior authentication, the impact is direct account compromise for any authenticated user.
Roundcube Webmail 1.6.0 through 1.6.13 allows Server-Side Request Forgery (SSRF) and Information Disclosure through insufficient CSS sanitization in HTML email messages, enabling attackers to craft malicious stylesheets that reference local network hosts. The vulnerability affects all instances processing HTML emails with external stylesheet links, and does not require authentication due to the unauthenticated attack vector (AV:N, PR:N in CVSS). Vendor-released patch: versions 1.6.14, 1.7-rc5, and later.
Cross-site scripting (XSS) in Roundcube Webmail before versions 1.5.14 and 1.6.14 allows remote attackers to inject malicious scripts via insufficient HTML sanitization in text/html attachment preview mode. An authenticated user must preview a malicious text/html attachment to trigger the vulnerability, enabling attackers to steal session cookies, redirect users, or perform actions on behalf of the victim. No public exploit code or active exploitation has been confirmed; EPSS score of 6.1 reflects moderate real-world risk given the user interaction requirement.
Roundcube Webmail before versions 1.5.14 and 1.6.14 allows authenticated remote attackers to conduct IMAP injection attacks or bypass CSRF protections via unsanitized IMAP SEARCH command arguments. The vulnerability requires user interaction (high complexity) and authenticated access, resulting in limited integrity impact without confidentiality or availability compromise. No public exploit code or active exploitation has been confirmed at time of analysis.
Cross-Site Scripting (XSS) vulnerability in Roundcube Webmail 1.6.9 allows remote authenticated users to upload a malicious file as an email attachment, leading to the triggering of the XSS by. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
A Cross-Site Scripting vulnerability in rcmail_action_mail_get->run() in Roundcube through 1.5.7 and 1.6.x through 1.6.7 allows a remote attacker to steal and send emails of a victim via a malicious. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Roundcube Webmail before 1.5.7 and 1.6.x before 1.6.7 on Windows allows command injection via im_convert_path and im_identify_path. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Roundcube Webmail before 1.5.7 and 1.6.x before 1.6.7 allows XSS via list columns from user preferences. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Cross-Site Scripting (XSS) vulnerability could allow attackers to inject malicious scripts into web pages viewed by other users.
Roundcube 1.5.x before 1.5.6 and 1.6.x before 1.6.5 allows XSS via a Content-Type or Content-Disposition header (used for attachment preview or download). Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Cross-Site Scripting (XSS) vulnerability could allow attackers to inject malicious scripts into web pages viewed by other users.
The Email Viewer in RainLoop through 1.6.0 allows XSS via a crafted email message. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Roundcube before 1.3.17 and 1.4.x before 1.4.12 is prone to XSS in handling an attachment's filename extension when displaying a MIME type warning message. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Cross-Site Scripting (XSS) vulnerability could allow attackers to inject malicious scripts into web pages viewed by other users.
Roundcube before 1.4.11 allows XSS via crafted Cascading Style Sheets (CSS) token sequences during HTML email rendering. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. This Cross-Site Scripting (XSS) vulnerability could allow attackers to inject malicious scripts into web pages viewed by other users.
Roundcube Webmail before 1.3.15 and 1.4.8 allows stored XSS in HTML messages during message display via a crafted SVG document. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Cross-Site Scripting (XSS) vulnerability could allow attackers to inject malicious scripts into web pages viewed by other users.
An issue was discovered in Roundcube Webmail before 1.2.11, 1.3.x before 1.3.14, and 1.4.x before 1.4.7. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Cross-Site Scripting (XSS) vulnerability could allow attackers to inject malicious scripts into web pages viewed by other users.
An issue was discovered in Roundcube Webmail before 1.3.12 and 1.4.x before 1.4.5. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Cross-Site Scripting (XSS) vulnerability could allow attackers to inject malicious scripts into web pages viewed by other users.
Roundcube Webmail before 1.4.4 allows attackers to include local files and execute code via directory traversal in a plugin name to rcube_plugin_api.php. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
An issue was discovered in Roundcube Webmail before 1.4.4. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
An issue was discovered in Roundcube Webmail before 1.4.4. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
Roundcube Webmail through 1.3.9 mishandles Punycode xn-- domain names, leading to homograph attacks. Rated high severity (CVSS 7.4), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
In Roundcube Webmail before 1.3.10, an attacker in possession of S/MIME or PGP encrypted emails can wrap them as sub-parts within a crafted multipart email. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Mailtraq WebMail version 2.17.7.3550 has Persistent Cross Site Scripting (XSS) via the body of an e-mail message. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
steps/mail/func.inc in Roundcube before 1.3.8 has XSS via crafted use of <svg><style>, as demonstrated by an onload attribute in a BODY element, within an HTML attachment. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Roundcube before 1.3.7 mishandles GnuPG MDC integrity-protection warnings, which makes it easier for attackers to obtain sensitive information, a related issue to CVE-2017-17688. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
In Roundcube from versions 1.2.0 to 1.3.5, with the archive plugin enabled and configured, it's possible to exploit the unsanitized, user-controlled "_uid" parameter (in an archive.php. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
roundcube version 1.3.4 and earlier contains an Insecure Permissions vulnerability in enigma plugin that can result in exfiltration of gpg private key. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
AdminPanel in AfterLogic WebMail 7.7 and Aurora 7.7.5 has XSS via the txtDomainName field to adminpanel/modules/pro/inc/ajax.php during addition of a domain. Rated medium severity (CVSS 4.8), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Roundcube Webmail 1.1.x before 1.1.2 allows remote attackers to obtain sensitive information by reading files in the (1) config, (2) temp, or (3) logs directory. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Exposure of Sensitive Information vulnerability could allow attackers to access sensitive data that should not be disclosed.
program/steps/addressbook/photo.inc in Roundcube Webmail before 1.0.6 and 1.1.x before 1.1.2 allows remote authenticated users to read arbitrary files via the _alt parameter when uploading a vCard. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. This Exposure of Sensitive Information vulnerability could allow attackers to access sensitive data that should not be disclosed.
Cross-site scripting (XSS) vulnerability in program/include/rcmail.php in Roundcube Webmail 1.1.x before 1.1.2 allows remote attackers to inject arbitrary web script or HTML via the _mbox parameter. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Roundcube Webmail allows arbitrary password resets by authenticated users. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Cross-site scripting (XSS) vulnerability in Roundcube Webmail before 1.0.9 and 1.1.x before 1.1.5 allows remote attackers to inject arbitrary web script or HTML via a crafted SVG, a different. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Cross-site scripting (XSS) vulnerability in Roundcube Webmail before 1.0.9 and 1.1.x before 1.1.5 allows remote attackers to inject arbitrary web script or HTML via a crafted SVG, a different. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
rcube_utils.php in Roundcube before 1.1.8 and 1.2.x before 1.2.4 is susceptible to a cross-site scripting vulnerability via a crafted Cascading Style Sheets (CSS) token sequence within an SVG element. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Cross-Site Scripting (XSS) vulnerability could allow attackers to inject malicious scripts into web pages viewed by other users.
Multiple buffer overflows in the DBMail driver in the Password plugin in Roundcube before 1.1.0 allow remote attackers to have unspecified impact via the (1) password or (2) username. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
The DBMail driver in the Password plugin in Roundcube before 1.1.0 allows remote attackers to execute arbitrary commands via shell metacharacters in the password. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Cross-site scripting (XSS) vulnerability in Roundcube Webmail before 1.2.0 allows remote attackers to inject arbitrary web script or HTML via the href attribute in an area tag in an e-mail message. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
steps/mail/sendmail.inc in Roundcube before 1.1.7 and 1.2.x before 1.2.3, when no SMTP server is configured and the sendmail program is enabled, does not properly restrict the use of custom. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable. Public exploit code available and EPSS exploitation probability 38.3%.
Cross-site request forgery (CSRF) vulnerability in Roundcube Webmail before 1.1.5 allows remote attackers to hijack the authentication of users for requests that download attachments and cause a. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Cross-site scripting (XSS) vulnerability in program/include/rcmail.php in Roundcube before 1.0.6 and 1.1.x before 1.1.2 allows remote attackers to inject arbitrary web script or HTML via the _mbox. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
Cross-site scripting (XSS) vulnerability in program/js/app.js in Roundcube webmail before 1.0.7 and 1.1.x before 1.1.3 allows remote authenticated users to inject arbitrary web script or HTML via the. Rated low severity (CVSS 3.5), this vulnerability is remotely exploitable. No vendor patch available.
program/lib/Roundcube/rcube_washtml.php in Roundcube before 1.0.5 does not properly quote strings, which allows remote attackers to conduct cross-site scripting (XSS) attacks via the style attribute. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable. Public exploit code available.
Multiple cross-site request forgery (CSRF) vulnerabilities in Roundcube Webmail before 1.0.4 allow remote attackers to hijack the authentication of unspecified victims via unknown vectors, related to. Rated medium severity (CVSS 6.8), this vulnerability is remotely exploitable.
Absolute path traversal vulnerability in steps/mail/sendmail.inc in Roundcube Webmail before 0.7.3 and 0.8.x before 0.8.6 allows remote attackers to read arbitrary files via a full pathname in the. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available.
steps/utils/save_pref.inc in Roundcube webmail before 0.8.7 and 0.9.x before 0.9.5 allows remote attackers to modify configuration settings via the _session parameter, which can be leveraged to read. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. This SQL Injection vulnerability could allow attackers to execute arbitrary SQL commands against the database.
Cross-site scripting (XSS) vulnerability in Roundcube webmail 1.0-git allows remote authenticated users to inject arbitrary web script or HTML via the Name field of an addressbook group. Rated low severity (CVSS 3.5), this vulnerability is remotely exploitable. Public exploit code available and no vendor patch available.
Multiple cross-site scripting (XSS) vulnerabilities in Roundcube webmail before 0.9.3 allow user-assisted remote attackers to inject arbitrary web script or HTML via the body of a message visited in. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable. Public exploit code available and no vendor patch available.
Cross-site scripting (XSS) vulnerability in Roundcube Webmail before 0.8.5 allows remote attackers to inject arbitrary web script or HTML via a (1) data:text or (2) vbscript link. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable. No vendor patch available.