Jenkins MCP Server Plugin 0.84.v50ca_24ef83f2 and earlier does not perform permission checks in multiple MCP tools, allowing attackers to trigger builds and obtain information about job and cloud configuration they should not be able to access.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - Jenkins MCP Server Plugin 0.84.v50ca_24ef83f2 and earlier does not perform permission checks in multiple
    MCP tools, allowing attackers to trigger builds and obtain information about job and cloud configuration
    they should not be able to access. (CVE-2025-64132)

According to their self-reported version numbers, the version of Jenkins plugins running on the remote web server are affected by multiple vulnerabilities:

  - Jenkins Azure CLI Plugin 0.9 and earlier does not restrict which commands it executes on the Jenkins     controller, allowing attackers with Item/Configure permission to execute arbitrary shell commands.
    (CVE-2025-64140)

  - Jenkins SAML Plugin 4.583.vc68232f7018a_ and earlier does not implement a replay cache, allowing attackers     able to obtain information about the SAML authentication flow between a user's web browser and Jenkins to     replay those requests, authenticating to Jenkins as that user. (CVE-2025-64131)

  - Jenkins MCP Server Plugin 0.84.v50ca_24ef83f2 and earlier does not perform permission checks in multiple     MCP tools, allowing attackers to trigger builds and obtain information about job and cloud configuration     they should not be able to access. (CVE-2025-64132)

  - A cross-site request forgery (CSRF) vulnerability in Jenkins Extensible Choice Parameter Plugin     239.v5f5c278708cf and earlier allows attackers to execute sandboxed Groovy code. (CVE-2025-64133)

  - Jenkins JDepend Plugin 1.3.1 and earlier includes an outdated version of JDepend Maven Plugin that does     not configure its XML parser to prevent XML external entity (XXE) attacks. (CVE-2025-64134)

  - Jenkins Eggplant Runner Plugin 0.0.1.301.v963cffe8ddb_8 and earlier sets the Java system property     `jdk.http.auth.tunneling.disabledSchemes` to an empty value, disabling a protection mechanism of the Java     runtime. (CVE-2025-64135)

  - A cross-site request forgery (CSRF) vulnerability in Jenkins Themis Plugin 1.4.1 and earlier allows     attackers to connect to an attacker-specified HTTP server. (CVE-2025-64136)

  - A missing permission check in Jenkins Themis Plugin 1.4.1 and earlier allows attackers with Overall/Read     permission to connect to an attacker-specified HTTP server. (CVE-2025-64137)

  - A cross-site request forgery (CSRF) vulnerability in Jenkins Start Windocks Containers Plugin 1.4 and     earlier allows attackers to connect to an attacker-specified URL. (CVE-2025-64138)

  - A missing permission check in Jenkins Start Windocks Containers Plugin 1.4 and earlier allows attackers     with Overall/Read permission to connect to an attacker-specified URL. (CVE-2025-64139)

  - A cross-site request forgery (CSRF) vulnerability in Jenkins Nexus Task Runner Plugin 0.9.2 and earlier     allows attackers to connect to an attacker-specified URL using attacker-specified credentials.
    (CVE-2025-64141)

  - A missing permission check in Jenkins Nexus Task Runner Plugin 0.9.2 and earlier allows attackers with     Overall/Read permission to connect to an attacker-specified URL using attacker-specified credentials.
    (CVE-2025-64142)

  - Jenkins OpenShift Pipeline Plugin 1.0.57 and earlier stores authorization tokens unencrypted in job     config.xml files on the Jenkins controller where they can be viewed by users with Item/Extended Read     permission, or access to the Jenkins controller file system. (CVE-2025-64143)

  - Jenkins ByteGuard Build Actions Plugin 1.0 stores API tokens unencrypted in job config.xml files on the     Jenkins controller where they can be viewed by users with Item/Extended Read permission, or access to the     Jenkins controller file system. (CVE-2025-64144)

  - Jenkins ByteGuard Build Actions Plugin 1.0 does not mask API tokens displayed on the job configuration     form, increasing the potential for attackers to observe and capture them. (CVE-2025-64145)

  - Jenkins Curseforge Publisher Plugin 1.0 stores API Keys unencrypted in job config.xml files on the Jenkins     controller where they can be viewed by users with Item/Extended Read permission, or access to the Jenkins     controller file system. (CVE-2025-64146)

  - Jenkins Curseforge Publisher Plugin 1.0 does not mask API Keys displayed on the job configuration form,     increasing the potential for attackers to observe and capture them. (CVE-2025-64147)

  - A missing permission check in Jenkins Publish to Bitbucket Plugin 0.4 and earlier allows attackers with     Overall/Read permission to enumerate credentials IDs of credentials stored in Jenkins. (CVE-2025-64148)

  - A cross-site request forgery (CSRF) vulnerability in Jenkins Publish to Bitbucket Plugin 0.4 and earlier     allows attackers to connect to an attacker-specified URL using attacker-specified credentials IDs obtained     through another method, capturing credentials stored in Jenkins. (CVE-2025-64149)

  - A missing permission check in Jenkins Publish to Bitbucket Plugin 0.4 and earlier allows attackers with     Overall/Read permission to connect to an attacker-specified URL using attacker-specified credentials IDs     obtained through another method, capturing credentials stored in Jenkins. (CVE-2025-64150)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
435873	SCA: security update for io.jenkins.plugins:mcp-server (GHSA-mrpq-9jr3-rqq9)	Tenable Cloud Security	SCA Checks	medium
435873	SCA: security update for io.jenkins.plugins:mcp-server (GHSA-mrpq-9jr3-rqq9)	Tenable Self-Hosted Container Security	SCA Checks	medium
271958	Jenkins plugins Multiple Vulnerabilities (2025-10-29)	Nessus	CGI abuses	high

Detections

Analytics

CVE-2025-64132

medium

Tenable Plugins

medium

medium

high