GHSA-mrpq-9jr3-rqq9
Jenkins MCP Server Plugin does not perform permission checks in multiple MCP tools
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Maven | io.jenkins.plugins:mcp-server | < 0.86.v7d3355e6a | 0.86.v7d3355e6a |
Details
As written in the advisory (Markdown source, shown as plain text).
Jenkins MCP Server Plugin 0.84.v50ca_24ef83f2 and earlier does not perform permission checks in several MCP tools.
This allows to do the following:
- Attackers with Item/Read permission can obtain information about the configured SCM in a job despite lacking Item/Extended Read permission (`getJobScm`).
- Attackers with Item/Read permission can trigger new builds of a job despite lacking Item/Build permission (`triggerBuild`).
- Attackers without Overall/Read permission can retrieve the names of configured clouds (`getStatus`).
MCP Server Plugin 0.86.v7d3355e6a_a_18 performs permission checks for the affected MCP tools.
References
External links from the advisory. They lead to third-party sites.
- https://nvd.nist.gov/vuln/detail/CVE-2025-64132
- https://github.com/jenkinsci/mcp-server-plugin/commit/59de6a268b4c6844a3a9c6c55a541de183e71a97
- https://github.com/jenkinsci/mcp-server-plugin
- https://www.jenkins.io/security/advisory/2025-10-29/#SECURITY-3622
- http://www.openwall.com/lists/oss-security/2025/10/29/2