Authentication Bypass
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
How It Works
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications. Instead of cracking passwords through brute force, attackers manipulate the authentication process itself to gain unauthorized entry. This typically occurs through one of several pathways: exploiting hardcoded credentials embedded in source code or configuration files, manipulating parameters in authentication requests to skip verification steps, or leveraging broken session management that fails to properly validate user identity.
The attack flow often begins with reconnaissance to identify authentication endpoints and their underlying logic. Attackers may probe for default administrative credentials that were never changed, test whether certain URL paths bypass login requirements entirely, or intercept and modify authentication tokens to escalate privileges. In multi-step authentication processes, flaws in state management can allow attackers to complete only partial verification steps while still gaining full access.
More sophisticated variants exploit single sign-on (SSO) or OAuth implementations where misconfigurations in trust relationships allow attackers to forge authentication assertions. Parameter tampering—such as changing a "role=user" field to "role=admin" in a request—can trick poorly designed systems into granting elevated access without proper verification.
Impact
- Complete account takeover — attackers gain full control of user accounts, including administrative accounts, without knowing legitimate credentials
- Unauthorized data access — ability to view, modify, or exfiltrate sensitive information including customer data, financial records, and intellectual property
- System-wide compromise — admin-level access enables installation of backdoors, modification of security controls, and complete infrastructure takeover
- Lateral movement — bypassed authentication provides a foothold for moving deeper into networks and accessing additional systems
- Compliance violations — unauthorized access triggers breach notification requirements and regulatory penalties
Real-World Examples
CrushFTP suffered a critical authentication bypass allowing attackers to access file-sharing functionality without any credentials. The vulnerability enabled direct server-side template injection, leading to remote code execution on affected systems. Attackers actively exploited this in the wild to establish persistent access to enterprise file servers.
Palo Alto's Expedition migration tool contained a flaw permitting attackers to reset administrative credentials without authentication. This allowed complete takeover of the migration environment, potentially exposing network configurations and security policies being transferred between systems.
SolarWinds Web Help Desk (CVE-2024-28987) shipped with hardcoded internal credentials that could not be changed through normal administrative functions. Attackers discovering these credentials gained full administrative access to helpdesk systems containing sensitive organizational information and user data.
Mitigation
- Implement multi-factor authentication (MFA) — requires attackers to compromise additional verification factors beyond bypassed primary authentication
- Eliminate hardcoded credentials — use secure credential management systems and rotate all default credentials during deployment
- Enforce authentication on all endpoints — verify every request requires valid authentication; no "hidden" administrative paths should exist
- Implement proper session management — use cryptographically secure session tokens, validate on server-side, enforce timeout policies
- Apply principle of least privilege — limit damage by ensuring even authenticated users only access necessary resources
- Regular security testing — conduct penetration testing specifically targeting authentication logic and flows
Recent CVEs (37611)
A lack of authorisation vulnerability has been detected in CanalDenuncia.app. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A lack of authorisation vulnerability has been detected in CanalDenuncia.app. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A lack of authorisation vulnerability has been detected in CanalDenuncia.app. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A lack of authorisation vulnerability has been detected in CanalDenuncia.app. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A lack of authorisation vulnerability has been detected in CanalDenuncia.app. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A lack of authorisation vulnerability has been detected in CanalDenuncia.app. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A lack of authorisation vulnerability has been detected in CanalDenuncia.app. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A lack of authorisation vulnerability has been detected in CanalDenuncia.app. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A lack of authorisation vulnerability has been detected in CanalDenuncia.app. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A lack of authorisation vulnerability has been detected in CanalDenuncia.app. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A lack of authorisation vulnerability has been detected in CanalDenuncia.app. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An Insecure Direct Object Reference (IDOR) vulnerability exists in the vehicleId parameter, allowing unauthorized access to sensitive information of other users’ vehicles. Rated high severity (CVSS 8.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
In preloader, there is a possible escalation of privilege due to an insecure default value. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity. No vendor patch available.
The Import Export For WooCommerce plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the update_setting() function in all versions up to, and. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The DominoKit plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on the wp_ajax_nopriv_dominokit_option_admin_action AJAX endpoint in all versions up to, and. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The Simple User Capabilities plugin for WordPress is vulnerable to Privilege Escalation due to a missing capability check on the suc_submit_capabilities() function in all versions up to, and. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The Simple User Capabilities plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'wp_ajax_nopriv_reset_capability' AJAX endpoint in all. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The Ai Auto Tool Content Writing Assistant (Gemini Writer, ChatGPT ) All in One plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The Crypto Payment Gateway with Payeer for WooCommerce plugin for WordPress is vulnerable to payment bypass in all versions up to, and including, 1.0.3. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The All in One Time Clock Lite plugin for WordPress is vulnerable to unauthorized access due to a missing authorization check in all versions up to, and including, 2.0.3. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Multiple plugins for WordPress with the Jewel Theme Recommended Plugins Library are vulnerable to Unrestricted Upload of File with Dangerous Type via arbitrary plugin installation in all versions up. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Information Disclosure when a user-level driver performs QFPROM read or write operations on Fuse regions. Rated high severity (CVSS 8.0), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
The CE21 Suite plugin for WordPress is vulnerable to unauthorized plugin settings update due to a missing capability check on the wp_ajax_nopriv_ce21_single_sign_on_save_api_settings AJAX action in. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An inconsistent user interface issue was addressed with improved state management. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A privacy issue was addressed by removing sensitive data. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
This issue was addressed with additional entitlement checks. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
An authorization issue was addressed with improved state management. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
The issue was addressed with improved checks. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
This issue was addressed with improved checks. Rated medium severity (CVSS 5.2), this vulnerability is low attack complexity. No vendor patch available.
A privacy issue was addressed with improved private data redaction for log entries. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
A permissions issue was addressed with additional restrictions. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
An authentication issue was addressed with improved state management. Rated medium severity (CVSS 4.6), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
This issue was addressed through improved state management. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A logic issue was addressed with improved checks. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A permissions issue was addressed with improved validation. Rated medium severity (CVSS 6.2), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
An access issue was addressed with additional sandbox restrictions. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A file quarantine bypass was addressed with additional checks. Rated medium severity (CVSS 6.3), this vulnerability is low attack complexity. No vendor patch available.
This issue was addressed by restricting options offered on a locked device. Rated low severity (CVSS 2.4), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
This issue was addressed with improved entitlements. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
A permissions issue was addressed by removing the vulnerable code. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.
A logic issue was addressed with improved checks. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
A permissions issue was addressed with additional restrictions. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
A logic issue was addressed with improved validation. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
A permissions issue was addressed with additional restrictions. Rated medium severity (CVSS 4.4), this vulnerability is low attack complexity. No vendor patch available.
The issue was addressed by adding additional logic. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
This issue was addressed with additional entitlement checks. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
A logic issue was addressed with improved checks. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
A logic issue was addressed with improved checks. Rated low severity (CVSS 2.4), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
This issue was addressed with improved validation of symlinks. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Deck Mate 2 is distributed with static, hard-coded credentials for the root shell and web user interface, while multiple management services (SSH, HTTP, Telnet, SMB, X11) are enabled by default. Rated high severity (CVSS 7.0), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
FairSketch Rise Ultimate Project Manager & CRM 3.9.4 is vulnerable to Insecure Permissions. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
lighttpd1.4.80 incorrectly merged trailer fields into headers after http request parsing. Rated medium severity (CVSS 6.9), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This HTTP Request/Response Smuggling vulnerability could allow attackers to manipulate HTTP request interpretation between frontend and backend servers.
Insider Threat Management (ITM) Server versions prior to 7.17.2 contain an authentication bypass vulnerability that allows unauthenticated users on an adjacent network to perform agent unregistration. Rated low severity (CVSS 2.3), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
IBM Cloud Pak For Business Automation 25.0.0, 24.0.1, and 24.0.0 could allow an attacker to access unauthorized content or perform unauthorized actions using man in the middle techniques due to. Rated medium severity (CVSS 4.8), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
Missing Authorization vulnerability in d3wp WP Snow Effect allows Accessing Functionality Not Properly Constrained by ACLs.1.15. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
CVLand versions 2.1.0 through 20251103 by CB Project Ltd. Co. permit authenticated attackers to bypass authorization controls via parameter injection, enabling elevated privilege actions and unauthorized access to sensitive data. The CVSS score of 9.9 reflects network-based exploitation with low complexity and scope change allowing high confidentiality and integrity impact. EPSS probability is 0.07% (22nd percentile), indicating relatively low observed exploitation likelihood despite the critical severity rating. No public exploit identified at time of analysis, though the vendor was notified and did not respond.
The privileged user could log in without sufficient credentials after enabling an application protocol. Rated high severity (CVSS 7.1), this vulnerability is remotely exploitable. No vendor patch available.
A vulnerability was identified in fushengqian fuint up to 41e26be8a2c609413a0feaa69bdad33a71ae8032. Rated low severity (CVSS 2.3), this vulnerability is remotely exploitable. No vendor patch available.
A vulnerability was identified in code-projects Simple Online Hotel Reservation System 2.0. Rated medium severity (CVSS 5.1), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
IBM i 7.6, 7.5, 7.4, 7.3, and 7.2 is vulnerable to privilege escalation caused by an invalid IBM i SQL services authorization check. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The Service Finder Bookings plugin for WordPress is vulnerable to privilege escalation via account takeover in all versions up to, and excluding, 6.1. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The Qi Blocks plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 1.4.3. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The Folderly plugin for WordPress is vulnerable to unauthorized modification of data due to an insufficient capability check on the /wp-json/folderly/v1/config/clear-all-data REST API endpoint in all. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The Service Finder Bookings plugin for WordPress is vulnerable to privilege escalation via account takeover in all versions up to, and including, 6.0. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The SiteSEO - SEO Simplified plugin for WordPress is vulnerable to Missing Authorization in versions up to, and including, 1.3.1. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The Post SMTP - Complete SMTP Solution with Logs, Alerts, Backup SMTP & Mobile App plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Epss exploitation probability 12.8% and no vendor patch available.
Blogs in Liferay Portal 7.4.0 through 7.4.3.111, and older unsupported versions, and Liferay DXP 2023.Q4.0 through 2023.Q4.10, 2023.Q3.1 through 2023.Q3.10, 7.4 GA through update 92, and older. Rated medium severity (CVSS 6.9), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The Privacy Policy Generator, Terms & Conditions Generator WordPress Plugin : WP Legal Pages plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The Document Library Lite plugin for WordPress is vulnerable to Improper Authorization in all versions up to, and including, 1.1.6. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Configuration file manipulation in ELOG electronic logbook system allows authenticated attackers to trigger denial of service by modifying or overwriting the configuration file. If the rarely-used execute facility is enabled via '-x' command line flag, the vulnerability escalates to remote code execution on the underlying host. Vendor patches are available via Bitbucket commits 7092ff6 and f81e569. EPSS data not available; no CISA KEV listing indicates targeted rather than widespread exploitation. The 7.1 CVSS 4.0 score reflects high availability impact and low integrity impact under default configurations, with significantly higher risk in non-default deployments using the execute facility.
This vulnerability in the Signal Level Attenuation Characterization (SLAC) protocol allows attackers to conduct man-in-the-middle attacks against electric vehicles and ISO 15118-2 compliant chargers by injecting spoofed signal level measurements. An attacker within close electromagnetic proximity can intercept and manipulate the wireless communication between EVs and chargers, potentially compromising the confidentiality and integrity of charging transactions. While the CVSS score of 6.3 indicates medium severity with low complexity exploitation, the EPSS score of 0.03% (6th percentile) suggests minimal real-world exploitation likelihood despite the critical nature of EV charging infrastructure.
Broken access control in WebToffee's Smart Coupons for WooCommerce plugin (versions through 2.2.3) permits authenticated low-privileged users - such as subscribers or customers - to access coupon-related resources or functionality restricted to higher-privileged roles. The flaw stems from missing server-side authorization checks (CWE-862), allowing an attacker with any valid WordPress account to exploit incorrectly configured access control levels. No public exploit code or active exploitation has been identified; EPSS sits at 0.03% (8th percentile), indicating very low real-world exploitation probability at time of analysis.
Broken access control in WPDeveloper Essential Addons for Elementor (lite, ≤6.2.4) permits a high-privileged authenticated WordPress user to access restricted functionality or data beyond their intended authorization scope. The vulnerability stems from missing server-side authorization checks (CWE-862), meaning the plugin fails to verify whether the requesting principal has permission to perform a given action. With a CVSS score of 2.7 and EPSS at 0.03%, real-world exploitation risk is low; no public exploit code or active KEV listing has been identified at time of analysis.
Missing authorization checks in Rank Math SEO WordPress plugin (versions through 1.0.252.1) allow authenticated high-privilege users to perform actions that exceed their intended access level, resulting in limited integrity and availability impact. The vulnerability stems from incorrectly configured access control security levels (CWE-862), enabling exploitation of plugin functionality without proper capability verification. No public exploit exists and EPSS remains at 0.01% (3rd percentile), indicating negligible real-world exploitation pressure at time of analysis.
Authentication cache collision in Dovecot mail server allows remote attackers to gain unauthorized access to other users' accounts under specific caching configurations. When passdb/userdb caching is enabled, certain drivers incorrectly use identical cache keys for multiple distinct users, causing authentication data from one user to be applied to subsequent login attempts by different users. This vulnerability enables attackers to authenticate as other users after the legitimate user's credentials are cached, with no public exploit identified at time of analysis. Despite low EPSS probability (0.03%), the network-accessible attack vector and potential for unauthorized email access warrants immediate remediation in environments using affected caching configurations.
Missing authorization controls in Premmerce Wholesale Pricing for WooCommerce (versions through 1.1.10) permit authenticated low-privileged users to invoke restricted plugin functionality without proper capability checks, resulting in unauthorized data modification and limited availability disruption. The CVSS vector (PR:L) confirms exploitation requires an authenticated WordPress account, constraining the attack surface to registered users. EPSS at 0.03% (10th percentile) and absence from CISA KEV indicate negligible observed exploitation activity at time of analysis.
Broken access control in the Evergreen Content Poster WordPress plugin (versions through 1.4.5) permits authenticated low-privilege users to invoke restricted plugin functionality without proper authorization checks. The root cause is CWE-862 (Missing Authorization), where the plugin fails to verify whether the requesting user holds the appropriate role before executing sensitive operations - allowing, at minimum, availability-impacting disruption to content scheduling workflows. No public exploit code has been identified at time of analysis, and the EPSS score of 0.03% (10th percentile) signals minimal observed exploitation activity.
Missing authorization controls in the MasterStudy LMS Pro WordPress plugin (all versions prior to 4.7.16) allow authenticated low-privilege users to exploit incorrectly configured access control levels, resulting in limited unauthorized integrity and availability impact. The flaw (CWE-862) indicates that one or more plugin endpoints or AJAX handlers execute privileged operations without verifying the calling user's capabilities. With EPSS at 0.03% and no CISA KEV listing, real-world exploitation risk is currently low, though the network-accessible attack vector means any authenticated site user could attempt to trigger the flaw without special conditions or user interaction.
Missing authorization in the Masterstudy Elementor Widgets WordPress plugin (versions through 1.2.4) allows unauthenticated remote attackers to access ACL-restricted functionality, resulting in unauthorized integrity impact. The CVSS vector (PR:N, AV:N, AC:L) confirms network-accessible exploitation without credentials, though impact is constrained to limited write operations (I:L) with no confidentiality or availability consequence. No public exploit has been identified at time of analysis, and EPSS probability is extremely low at 0.04% (11th percentile), indicating minimal observed exploitation activity.
Broken access control in the wpresidence WordPress theme (versions through 5.3.2) exposes one or more endpoints that can be reached and triggered by unauthenticated remote attackers, resulting in unauthorized write-level actions against the site. The CVSS vector (PR:N, AV:N, AC:L) confirms no authentication is required, and the 'Authentication Bypass' tag indicates authorization checks are entirely absent rather than merely misconfigured. No public exploit code has been identified and EPSS sits at 0.04% (11th percentile), indicating very low real-world exploitation probability at this time.
Unauthenticated access control bypass in Blog Designer PRO WordPress plugin (versions through 3.4.8) allows remote attackers to invoke ACL-restricted functionality without holding any WordPress account, resulting in limited unauthorized data modification. The provided CVSS vector confirms the attack is network-accessible with no authentication, no user interaction, and low complexity (AV:N/AC:L/PR:N/UI:N), though impact is bounded to integrity-only modifications with no confidentiality or availability consequence. No public exploit has been identified and EPSS places this at the 18th percentile (0.06%), indicating no observed mass exploitation - this vulnerability is also absent from CISA KEV.
Arbitrary file read vulnerability in Anti-Malware Security and Brute-Force Firewall WordPress plugin (versions up to 4.23.81) allows authenticated Subscriber-level users to read sensitive files from the server via unprotected AJAX endpoints. The vulnerability combines missing capability checks with information exposure in multiple GOTMLS_* AJAX actions, enabling attackers with minimal WordPress privileges to access arbitrary file contents including configuration files and credentials. No public exploit code has been confirmed at this time, though the vulnerability is trivial to exploit given the low authentication barrier.
Missing authorization in Facebook for WooCommerce plugin versions up to 3.5.7 allows authenticated attackers to bypass access controls and dismiss administrative notices through incorrectly configured security levels. The vulnerability enables privilege escalation or information disclosure via improper access control enforcement, though the low EPSS score (0.03%, 9th percentile) suggests limited real-world exploitation likelihood despite the broken access control flaw.
Improper instruction emulation in the Linux kernel's KVM x86 subsystem allows a local user with access to KVM (typically /dev/kvm) to crash or destabilize the host hypervisor by racing port I/O interception changes against a userspace I/O exit. Because KVM re-checks L1 intercepts after it has already committed to emulating an L2 I/O access, a malicious or buggy VMM/guest can leave vcpu->arch.pio.count non-zero and trigger a kernel WARN in emulator_pio_in_out(); the flaw was discovered via a syzkaller reproducer. There is no public exploit identified at time of analysis and EPSS exploitation probability is low (0.25%).
Unrestricted file upload in Simple Food Ordering System 1.0 (PHP) allows remote attackers to upload arbitrary files through the photo parameter of /addproduct.php, potentially enabling web shell deployment and full server compromise. The affected product is tracked under CPE cpe:2.3:a:fabian:simple_food_ordering_system:1.0, and exploit code is publicly available via GitHub. No active exploitation is confirmed in CISA KEV, and EPSS sits at 0.06% (17th percentile), though the presence of a public proof-of-concept combined with an authentication bypass tag elevates realistic risk above what the low EPSS would suggest.
MaxSite CMS up to version 109 contains an improper access control vulnerability in the file editor plugin that allows authenticated remote attackers to upload arbitrary files by manipulating the file_path and content parameters in save-file-ajax.php. Publicly available exploit code exists for this vulnerability, and the vendor has not responded to early disclosure attempts, leaving affected installations unpatched.
MaxSite CMS up to version 109 contains an unrestricted file upload vulnerability in the auto_post plugin's upload handler that allows authenticated remote attackers to bypass file upload restrictions by manipulating HTTP headers (X-Requested-FileName and X-Requested-FileUpDir). Public exploit code is available, though EPSS score (0.05%) suggests limited real-world exploitation despite the publicly disclosed proof-of-concept.
Yonyou U8 Cloud versions up to 5.1sp allow authenticated remote attackers to bypass file upload restrictions via manipulation of the ts and sign parameters in the /service/NCloudGatewayServlet endpoint, enabling unrestricted file uploads. The vulnerability affects the Request Header Handler component and has been publicly disclosed with exploit code available, though the vendor has not responded to early notification.
Willow CMS up to version 1.4.0 allows high-privilege authenticated users to upload arbitrary files via an unrestricted file upload vulnerability in the /admin/images/add endpoint. The CVSS 2.0 score reflects the requirement for high-privilege authentication (PR:H), but public exploit code availability combined with low EPSS (0.05th percentile) suggests this is primarily exploitable only by compromised or malicious administrators rather than remote unauthenticated attackers.
Unrestricted file upload in code-projects Simple Food Ordering System 1.0 allows remote attackers to upload arbitrary files through the photo parameter of /editproduct.php, exploiting improper access control (CWE-284) that effectively bypasses authentication on the upload endpoint. The Authentication Bypass tag alongside CWE-284 signals that the product-editing endpoint - which should be access-controlled - can be reached without valid credentials, enabling file placement on the server. A public proof-of-concept is disclosed on GitHub; EPSS sits at 0.06% (17th percentile), indicating minimal observed exploitation at time of analysis, and this CVE does not appear in the CISA KEV catalog.
Quick Facts
- Typical Severity
- CRITICAL
- Category
- auth
- Total CVEs
- 37611