What is GHSA-mpff-xhg4-vr45?

GHSA-mpff-xhg4-vr45 is a security advisory published by GitHub Security Advisories with Medium severity. Jenkins MCP Server Plugin missing a permission check

Which CVE IDs does GHSA-mpff-xhg4-vr45 cover?

GHSA-mpff-xhg4-vr45 covers the following CVE IDs: CVE-2026-57300. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-mpff-xhg4-vr45?

GHSA-mpff-xhg4-vr45 has a CVSS v3 base score of 4.3, published by GitHub Security Advisories.

Which products are affected by GHSA-mpff-xhg4-vr45?

GHSA-mpff-xhg4-vr45 affects 1 product, including: maven/io.jenkins.plugins:mcp-server:\u003c 0.178.vffe5a.

GHSA-mpff-xhg4-vr45MediumCVSS 4.3

Jenkins MCP Server Plugin missing a permission check

Vendor

GitHub Security Advisories

Published

June 24, 2026

Last Modified

September 25, 2026

🔗 CVE IDs covered (1)

CVE-2026-57300 →

📋 Description

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.

🎯 Affected products1

maven/io.jenkins.plugins:mcp-server:< 0.178.vffe5a

🔗 References (5)

https://nvd.nist.gov/vuln/detail/CVE-2026-57300
https://www.jenkins.io/security/advisory/2026-06-24/#SECURITY-3759
https://github.com/jenkinsci/mcp-server-plugin/commit/ffe5ae770f3bd7e88c99aea3018263af0b2f9cc4
https://github.com/jenkinsci/mcp-server-plugin/releases/tag/0.178.vffe5a_e770f3b_
https://github.com/advisories/GHSA-mpff-xhg4-vr45