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Advisory record · GHSA-mpff-xhg4-vr45

Jenkins MCP Server Plugin missing a permission check

CVSS 4.3 MediumEPSS 0.0028 · 20th percentile

Published by the GitHub Advisory Database at 24 Jun 2026, 15:31 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
io.jenkins.plugins:mcp-serverMaven<0.178.vffe5a0.178.vffe5a
Identifiers
GHSA-mpff-xhg4-vr45 · CVE-2026-57300
Weakness (CWE)
CWE-862
Tags
Published
24 Jun 2026
Updated
25 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Jenkins MCP Server Plugin version 0.177.v629fdb_2557fe and earlier is vulnerable. The getReplayScripts MCP tool does not perform a permission check, so a user with Item/Read permission can obtain the Pipeline script of jobs. Upgrade to version 0.178.vffe5a_e770f3b_ or later, which requires Item/Extended Read permission to return replay scripts.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
4.3 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS 0.0028, the 20th percentile, on 8 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:16 UTC First seen by agentprime
  2. 31 Oct 2026, 14:16 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.