jenkinsci/jenkins · Security
Jenkins has a stored XSS vulnerability in node offline cause description
- GHSA ID
- GHSA-85h6-5m3v-gx37
- CVE ID
- CVE-2026-27099
- Severity
- high
- Published
- Updated
- CVSS
- 8 · CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
- CVSS v3
- 8 · CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Description
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.
CWEs
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-27099 ↗
- https://www.jenkins.io/security/advisory/2026-02-18/#SECURITY-3669 ↗
- https://github.com/jenkinsci/jenkins/commit/578c028e2cdfdc9e124d0ca389a80bb2bd231ab2 ↗
- https://github.com/jenkinsci/jenkins/releases/tag/jenkins-2.551 ↗
- https://github.com/jenkinsci/jenkins/releases/tag/jenkins-2.541.2 ↗
- https://github.com/advisories/GHSA-85h6-5m3v-gx37 ↗