MEDIUM4.3

GHSA-mpff-xhg4-vr45

Jenkins MCP Server Plugin missing a permission check

Quick fix

GHSA-mpff-xhg4-vr45 — io.jenkins.plugins:mcp-server: upgrade to the fixed version with the command below.

# pom.xml: bump <version>0.178.vffe5a</version> for io.jenkins.plugins:mcp-server

Details

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.

Are you affected?

Enter the version of the package you're using.

Affected packages

Maven/io.jenkins.plugins:mcp-server

Introduced in: 0Fixed in: 0.178.vffe5a

Fix# pom.xml: bump <version>0.178.vffe5a</version> for io.jenkins.plugins:mcp-server

References

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]