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Advisory record · GHSA-wfhp-qgm8-5p5c

Jenkins has a build information disclosure vulnerability through Run Parameter

CVSS 4.3 MediumEPSS 0.0037 · 31st percentile

Published by the GitHub Advisory Database at 18 Feb 2026, 15:31 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.jenkins-ci.main:jenkins-coreMaven>=2.542, <2.551 || <2.541.22.551, 2.541.2
Identifiers
GHSA-wfhp-qgm8-5p5c · BIT-jenkins-2026-27100 · CVE-2026-27100
Weakness (CWE)
CWE-200
Tags
Published
18 Feb 2026
Updated
10 Sept 2026

Machine-written summary

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

Jenkins core (org.jenkins-ci.main:jenkins-core) versions 2.542 up to but not including 2.551, and versions before 2.541.2, accept Run Parameter values that point to builds the submitting user cannot access. An attacker with Item/Build and Item/Configure permissions can learn whether jobs and builds exist and, if a build exists, its display name. Upgrade to version 2.551 or 2.541.2.

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 0.0037, the 31st percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:17 UTC First seen by agentprime
  2. 31 Oct 2026, 14:17 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.