GHSA-mpff-xhg4-vr45

Jenkins MCP Server Plugin missing a permission check

Source: GitHub Advisory Database (reviewed) Moderate CVE-2026-57300

Packages

Ecosystem	Package	Affected	Fixed in
Maven	io.jenkins.plugins:mcp-server	< 0.178.vffe5a	0.178.vffe5a

Details

As written in the advisory (Markdown source, shown as plain text).

Jenkins MCP Server Plugin 0.177.v629fdb_2557fe and earlier does not perform a permission check in the getReplayScripts MCP tool that returns the replay script of a Pipeline build. This allows attackers with Item/Read permission to obtain the Pipeline script of jobs. MCP Server Plugin 0.178.vffe5a_e770f3b_ requires Item/Extended Read permission to return the replay script of a Pipeline build through the getReplayScripts MCP tool.

References

External links from the advisory. They lead to third-party sites.

https://nvd.nist.gov/vuln/detail/CVE-2026-57300 advisory
https://github.com/jenkinsci/mcp-server-plugin/commit/ffe5ae770f3bd7e88c99aea3018263af0b2f9cc4 web
https://github.com/jenkinsci/mcp-server-plugin package
https://github.com/jenkinsci/mcp-server-plugin/releases/tag/0.178.vffe5a_e770f3b_ web
https://www.jenkins.io/security/advisory/2026-06-24/#SECURITY-3759 web