Jenkins MCP Server Plugin does not perform permission checks in multiple MCP tools
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.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | io.jenkins.plugins:mcp-server | < 0.86.v7d3355e6a | 0.86.v7d3355e6a |
References
- 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
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N- Weakness (CWE)
CWE-862- Platform
- Java / Kotlin (Maven)
- Package
io.jenkins.plugins:mcp-server- Disclosed
- 29.10.2025
- Updated
- 11.10.2026 12:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-mrpq-9jr3-rqq9 - CC BY 4.0
Vulnerability history: io.jenkins.plugins:mcp-server
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 2
- First → latest
- 10.2025 06.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Medium 2
Disclosures per year
- 2025: 1
- 2026: 1
-
Jenkins MCP Server Plugin does not perform permission checks in multiple MCP tools this entry
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