Plesk
Monthly
OS command injection in Plesk allows any authenticated low-privilege panel account - customer, reseller, or subscription level - to run arbitrary operating-system commands with root privileges, turning what is normally a tightly scoped hosting login into full control of the managed server. The flaw is remotely reachable over the network at low complexity with no user interaction (CVSS 4.0 base 9.4; independently assessed as CVSS 3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H), and the scope change plus high confidentiality, integrity, and availability impact reflect a complete host compromise rather than a single-tenant breach. No public exploit code has been identified at time of analysis and the CVE is not listed as confirmed actively exploited (CISA KEV), but the low bar of a single valid non-admin session keeps the practical risk high; the specific vulnerable panel function and the exact affected Plesk versions are not stated in the available data and must be confirmed against the vendor advisory.
Arbitrary code execution as root is achievable on affected Plesk servers by any authenticated panel user who can influence a directory on the untrusted search path used by the Plesk RESTful API extension. Exploitation requires Plesk core 18.0.34 through 18.0.80.7 or 18.0.81 (i.e., below 18.0.80.8 / 18.0.81.1 respectively) together with the 'Plesk RESTful API' extension at versions 2.4.2 through 2.4.6; the vector is network-reachable, needs only low-privilege credentials (PR:L per the CVSS 4.0 vector) and no user interaction, making a full root compromise of the hosting panel feasible from an ordinary subscription account. Independent assessment rates this a genuinely high-priority flaw despite thin external signal, since successful exploitation yields complete loss of confidentiality, integrity and availability on the panel host (CVSS 4.0 base 8.7; assessed CVSS 3.1 8.7 with S:U/C:H/I:H/A:H). No public exploit code identified at time of analysis, and no EPSS or CISA KEV data corroborates active exploitation; vendor fixes are available in Plesk 18.0.80.8 / 18.0.81.1 and extension 2.4.7.
Arbitrary file write as root in Plesk's Backup Manager lets an authenticated customer escalate to full server compromise through a path traversal (CWE-36) in the handling of an unsigned backup header. Any low-privileged Plesk customer account can write files to attacker-chosen locations with root privileges, and because Plesk is a widely deployed hosting control panel, the flaw exposes shared and reseller hosting environments to tenant-to-root escalation. No public exploit identified at time of analysis, though the vendor support advisory documents the root cause (unsigned/unvalidated backup header enabling traversal).
Local privilege escalation to root affects the Backup Manager component of WebPros Plesk, where a time-of-check-to-time-of-use race condition during backup restore allows an attacker to abuse insecure symlink following and take ownership of arbitrary files or directories. A low-privileged Plesk account holder who wins the race can redirect a root-executed restore operation onto attacker-chosen paths, gaining full root control of the hosting server. No public exploit is identified at time of analysis, and it is not listed in CISA KEV.
Privilege escalation to root in Plesk for Linux (18.0.34 up to 18.0.79.9 / 18.0.80.5) lets a customer- or reseller-level account with shell access run OS command injection (CWE-78) to take over the entire hosting server. Any tenant permitted to use - or to toggle on - their own shell access can break out of their restricted account and reach the root identity, collapsing the isolation between shared-hosting customers and the host. No public exploit has been identified at time of analysis and it is not listed in CISA KEV, but the vendor rates it critical (CVSS 9.0) and has shipped fixed builds.
Authenticated remote attackers against WebPros Plesk (versions before 18.0.79.8, and 18.0.80 through 18.0.80.3) can inject special elements into the DNS zone management functionality to read arbitrary files on the server and escalate their privileges. Because the CVSS scope is changed (S:C), a low-privileged panel user can break out of their intended boundary to compromise the underlying host with full confidentiality, integrity, and availability impact. No public exploit is identified at time of analysis, and EPSS is low (0.29%) with SSVC exploitation status 'none', indicating no observed exploitation yet.
Cross-tenant insecure direct object reference in Plesk's database management interface allows any authenticated hosting panel customer to read and overwrite databases belonging to other customers on the same server, affecting versions 18.0.79.7 and earlier and 18.0.80 through 18.0.80.3. The CVSS 4.0 score of 8.6 reflects high confidentiality and integrity impact with low attack complexity, consistent with the description: a valid tenant account and knowledge of another tenant's database identifier are all that is required. No public exploit code or CISA KEV listing has been identified at time of analysis, but the multi-tenant hosting context amplifies real-world impact significantly.
Privilege escalation to remote code execution in Plesk (18.0.52 through 18.0.79.6, and the 18.0.80.0 branch before 18.0.80.2) lets a low-privileged panel user - a customer or reseller - abuse a flawed database cloning routine to run arbitrary code with the privileges of the database server administrator. Because Plesk multiplexes many tenants onto shared database infrastructure, this breaks tenant isolation and effectively hands a paying customer control of the shared DB admin context. No public exploit or CISA KEV listing has been identified; the vendor CVSS 4.0 score is 9.3 (Critical), though the vector's PR:N conflicts with the description's stated need for a low-privileged account.
SQL injection in the Plesk hosting control panel's XML-RPC API allows a remote, low-privileged authenticated user to inject crafted SQL and read arbitrary data from the Plesk database (CWE-89), which the vendor states leads to full compromise of the panel. All Plesk builds prior to 18.0.79.4 are affected, and WebPros has released a fixed version. There is no public exploit identified at time of analysis and the flaw is not listed in CISA KEV, but the very high 9.9 CVSS and scope-change to full panel takeover make this a high-priority patch.
Cross-tenant credential disclosure in WebPros Plesk before 18.0.78.4 allows a low-privileged authenticated customer to enumerate domains belonging to other tenants through the XML-RPC API, because ownership checks are applied only to certain lookup filters and schema validation is skipped for legacy protocol versions. Because affected FTP credentials are stored in cleartext, an attacker retrieves another tenant's FTP password and can pivot to executing code as that tenant's system user. No public exploit has been identified at time of analysis, but the flaw was reported via HackerOne and carries a CVSS 9.9 rating.
Privilege escalation in the Plesk web hosting control panel lets an authenticated low-privileged user abuse an improper authorization flaw in the XML API to inject arbitrary configuration directives, achieving arbitrary file write as root and full compromise of the underlying server. Rated CVSS 9.9 with a scope change, this turns any valid panel account into root on the host; no public exploit identified at time of analysis and it is not listed in CISA KEV.
Authenticated Plesk panel users can escalate to root on Plesk 18.0 (Obsidian) servers by exploiting incorrect access control in the Password-Protected Directories feature, per the vendor advisory that states this allows 'Plesk users to gain root-level access.' This is a privilege-escalation-to-root path rather than a pre-auth remote takeover; the raw NVD CVSS vector (PR:N, 9.1) is inconsistent with the vendor's description and our independent assessment, which requires a valid Plesk account (PR:L) and rates the impact as scope-changed with high confidentiality, integrity, and availability. No public exploit code has been identified at time of analysis, and the EPSS score is low at 0.55% (45th percentile), though the severity of root compromise on a hosting control panel warrants urgent patching.
Uncontrolled search path element vulnerability in Plesk Installer affects version 3.27.0.0. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Plesk Onyx 17.8.11 has accessKeyId and secretAccessKey fields that are related to an Amazon AWS Firehose component. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Plesk 17.0 through 18.0.31 version, is vulnerable to a Cross-Site Scripting. Rated critical severity (CVSS 9.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
A Host Header Injection issue on the Login page of Plesk Obsidian through 18.0.49 allows attackers to redirect users to malicious websites via a Host request header. 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.
Plesk Obsidian allows a CSRF attack, e.g., via the /api/v2/cli/commands REST API to change an Admin password. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
The feature to preview a website in Plesk Obsidian 18.0.0 through 18.0.32 on Linux is vulnerable to reflected XSS via the /plesk-site-preview/ PATH, aka PFSI-62467. 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 GET-based XSS reflected vulnerability in Plesk Onyx 17.8.11 allows remote unauthenticated users to inject arbitrary JavaScript, HTML, or CSS via a GET parameter. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A GET-based XSS reflected vulnerability in Plesk Obsidian 18.0.17 allows remote unauthenticated users to inject arbitrary JavaScript, HTML, or CSS via a GET parameter. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
OS command injection in Plesk allows any authenticated low-privilege panel account - customer, reseller, or subscription level - to run arbitrary operating-system commands with root privileges, turning what is normally a tightly scoped hosting login into full control of the managed server. The flaw is remotely reachable over the network at low complexity with no user interaction (CVSS 4.0 base 9.4; independently assessed as CVSS 3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H), and the scope change plus high confidentiality, integrity, and availability impact reflect a complete host compromise rather than a single-tenant breach. No public exploit code has been identified at time of analysis and the CVE is not listed as confirmed actively exploited (CISA KEV), but the low bar of a single valid non-admin session keeps the practical risk high; the specific vulnerable panel function and the exact affected Plesk versions are not stated in the available data and must be confirmed against the vendor advisory.
Arbitrary code execution as root is achievable on affected Plesk servers by any authenticated panel user who can influence a directory on the untrusted search path used by the Plesk RESTful API extension. Exploitation requires Plesk core 18.0.34 through 18.0.80.7 or 18.0.81 (i.e., below 18.0.80.8 / 18.0.81.1 respectively) together with the 'Plesk RESTful API' extension at versions 2.4.2 through 2.4.6; the vector is network-reachable, needs only low-privilege credentials (PR:L per the CVSS 4.0 vector) and no user interaction, making a full root compromise of the hosting panel feasible from an ordinary subscription account. Independent assessment rates this a genuinely high-priority flaw despite thin external signal, since successful exploitation yields complete loss of confidentiality, integrity and availability on the panel host (CVSS 4.0 base 8.7; assessed CVSS 3.1 8.7 with S:U/C:H/I:H/A:H). No public exploit code identified at time of analysis, and no EPSS or CISA KEV data corroborates active exploitation; vendor fixes are available in Plesk 18.0.80.8 / 18.0.81.1 and extension 2.4.7.
Arbitrary file write as root in Plesk's Backup Manager lets an authenticated customer escalate to full server compromise through a path traversal (CWE-36) in the handling of an unsigned backup header. Any low-privileged Plesk customer account can write files to attacker-chosen locations with root privileges, and because Plesk is a widely deployed hosting control panel, the flaw exposes shared and reseller hosting environments to tenant-to-root escalation. No public exploit identified at time of analysis, though the vendor support advisory documents the root cause (unsigned/unvalidated backup header enabling traversal).
Local privilege escalation to root affects the Backup Manager component of WebPros Plesk, where a time-of-check-to-time-of-use race condition during backup restore allows an attacker to abuse insecure symlink following and take ownership of arbitrary files or directories. A low-privileged Plesk account holder who wins the race can redirect a root-executed restore operation onto attacker-chosen paths, gaining full root control of the hosting server. No public exploit is identified at time of analysis, and it is not listed in CISA KEV.
Privilege escalation to root in Plesk for Linux (18.0.34 up to 18.0.79.9 / 18.0.80.5) lets a customer- or reseller-level account with shell access run OS command injection (CWE-78) to take over the entire hosting server. Any tenant permitted to use - or to toggle on - their own shell access can break out of their restricted account and reach the root identity, collapsing the isolation between shared-hosting customers and the host. No public exploit has been identified at time of analysis and it is not listed in CISA KEV, but the vendor rates it critical (CVSS 9.0) and has shipped fixed builds.
Authenticated remote attackers against WebPros Plesk (versions before 18.0.79.8, and 18.0.80 through 18.0.80.3) can inject special elements into the DNS zone management functionality to read arbitrary files on the server and escalate their privileges. Because the CVSS scope is changed (S:C), a low-privileged panel user can break out of their intended boundary to compromise the underlying host with full confidentiality, integrity, and availability impact. No public exploit is identified at time of analysis, and EPSS is low (0.29%) with SSVC exploitation status 'none', indicating no observed exploitation yet.
Cross-tenant insecure direct object reference in Plesk's database management interface allows any authenticated hosting panel customer to read and overwrite databases belonging to other customers on the same server, affecting versions 18.0.79.7 and earlier and 18.0.80 through 18.0.80.3. The CVSS 4.0 score of 8.6 reflects high confidentiality and integrity impact with low attack complexity, consistent with the description: a valid tenant account and knowledge of another tenant's database identifier are all that is required. No public exploit code or CISA KEV listing has been identified at time of analysis, but the multi-tenant hosting context amplifies real-world impact significantly.
Privilege escalation to remote code execution in Plesk (18.0.52 through 18.0.79.6, and the 18.0.80.0 branch before 18.0.80.2) lets a low-privileged panel user - a customer or reseller - abuse a flawed database cloning routine to run arbitrary code with the privileges of the database server administrator. Because Plesk multiplexes many tenants onto shared database infrastructure, this breaks tenant isolation and effectively hands a paying customer control of the shared DB admin context. No public exploit or CISA KEV listing has been identified; the vendor CVSS 4.0 score is 9.3 (Critical), though the vector's PR:N conflicts with the description's stated need for a low-privileged account.
SQL injection in the Plesk hosting control panel's XML-RPC API allows a remote, low-privileged authenticated user to inject crafted SQL and read arbitrary data from the Plesk database (CWE-89), which the vendor states leads to full compromise of the panel. All Plesk builds prior to 18.0.79.4 are affected, and WebPros has released a fixed version. There is no public exploit identified at time of analysis and the flaw is not listed in CISA KEV, but the very high 9.9 CVSS and scope-change to full panel takeover make this a high-priority patch.
Cross-tenant credential disclosure in WebPros Plesk before 18.0.78.4 allows a low-privileged authenticated customer to enumerate domains belonging to other tenants through the XML-RPC API, because ownership checks are applied only to certain lookup filters and schema validation is skipped for legacy protocol versions. Because affected FTP credentials are stored in cleartext, an attacker retrieves another tenant's FTP password and can pivot to executing code as that tenant's system user. No public exploit has been identified at time of analysis, but the flaw was reported via HackerOne and carries a CVSS 9.9 rating.
Privilege escalation in the Plesk web hosting control panel lets an authenticated low-privileged user abuse an improper authorization flaw in the XML API to inject arbitrary configuration directives, achieving arbitrary file write as root and full compromise of the underlying server. Rated CVSS 9.9 with a scope change, this turns any valid panel account into root on the host; no public exploit identified at time of analysis and it is not listed in CISA KEV.
Authenticated Plesk panel users can escalate to root on Plesk 18.0 (Obsidian) servers by exploiting incorrect access control in the Password-Protected Directories feature, per the vendor advisory that states this allows 'Plesk users to gain root-level access.' This is a privilege-escalation-to-root path rather than a pre-auth remote takeover; the raw NVD CVSS vector (PR:N, 9.1) is inconsistent with the vendor's description and our independent assessment, which requires a valid Plesk account (PR:L) and rates the impact as scope-changed with high confidentiality, integrity, and availability. No public exploit code has been identified at time of analysis, and the EPSS score is low at 0.55% (45th percentile), though the severity of root compromise on a hosting control panel warrants urgent patching.
Uncontrolled search path element vulnerability in Plesk Installer affects version 3.27.0.0. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Plesk Onyx 17.8.11 has accessKeyId and secretAccessKey fields that are related to an Amazon AWS Firehose component. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Plesk 17.0 through 18.0.31 version, is vulnerable to a Cross-Site Scripting. Rated critical severity (CVSS 9.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
A Host Header Injection issue on the Login page of Plesk Obsidian through 18.0.49 allows attackers to redirect users to malicious websites via a Host request header. 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.
Plesk Obsidian allows a CSRF attack, e.g., via the /api/v2/cli/commands REST API to change an Admin password. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
The feature to preview a website in Plesk Obsidian 18.0.0 through 18.0.32 on Linux is vulnerable to reflected XSS via the /plesk-site-preview/ PATH, aka PFSI-62467. 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 GET-based XSS reflected vulnerability in Plesk Onyx 17.8.11 allows remote unauthenticated users to inject arbitrary JavaScript, HTML, or CSS via a GET parameter. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A GET-based XSS reflected vulnerability in Plesk Obsidian 18.0.17 allows remote unauthenticated users to inject arbitrary JavaScript, HTML, or CSS via a GET parameter. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.