CVE-2026-27099
HIGH8.0EPSS 0.07%Jenkins has a stored XSS vulnerability in node offline cause description
Published: 2/18/2026Modified: 2/25/2026
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.
Affected packages (2)
- Bitnami/jenkins>= 2.483.0, < 2.541.2, >= 2.542.0, < 2.551.0
- Maven/org.jenkins-ci.main:jenkins-core>= 2.542, < 2.551
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.0 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H |
References (6)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2026-27099
- PATCHhttps://github.com/jenkinsci/jenkins
- WEBhttps://github.com/jenkinsci/jenkins/commit/578c028e2cdfdc9e124d0ca389a80bb2bd231ab2
- WEBhttps://github.com/jenkinsci/jenkins/releases/tag/jenkins-2.541.2
- WEBhttps://github.com/jenkinsci/jenkins/releases/tag/jenkins-2.551
- WEBhttps://www.jenkins.io/security/advisory/2026-02-18/#SECURITY-3669