HIGH8.0
GHSA-85h6-5m3v-gx37
Jenkins has a stored XSS vulnerability in node offline cause description
Quick fix
GHSA-85h6-5m3v-gx37 — org.jenkins-ci.main:jenkins-core: upgrade to the fixed version with the command below.
# pom.xml: bump <version>2.551</version> for org.jenkins-ci.main:jenkins-coreDetails
Jenkins 2.483 through 2.550 (both inclusive), LTS 2.492.1 through 2.541.1 (both inclusive) does not escape the user-provided description of the "Mark temporarily offline" offline cause, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Agent/Configure or Agent/Disconnect permission.
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Affected packages
Maven/org.jenkins-ci.main:jenkins-core
Introduced in:
2.542Fixed in: 2.551Fix
# pom.xml: bump <version>2.551</version> for org.jenkins-ci.main:jenkins-coreMaven/org.jenkins-ci.main:jenkins-core
Introduced in:
2.483Fixed in: 2.541.2Fix
# pom.xml: bump <version>2.541.2</version> for org.jenkins-ci.main:jenkins-coreReferences
- https://nvd.nist.gov/vuln/detail/CVE-2026-27099[ADVISORY]
- https://github.com/jenkinsci/jenkins/commit/578c028e2cdfdc9e124d0ca389a80bb2bd231ab2[WEB]
- https://github.com/jenkinsci/jenkins[PACKAGE]
- https://github.com/jenkinsci/jenkins/releases/tag/jenkins-2.541.2[WEB]
- https://github.com/jenkinsci/jenkins/releases/tag/jenkins-2.551[WEB]
- https://www.jenkins.io/security/advisory/2026-02-18/#SECURITY-3669[WEB]