high8.0
CVE-2026-27099
Jenkins has a stored XSS vulnerability in node offline cause description
Impact
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
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| maven | org.jenkins-ci.main:jenkins-core | >= 2.542, < 2.551 | 2.551 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Jenkins | Jenkins | from 2.483 before 2.551 from 2.492.1 before 2.541.2 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://www.jenkins.io/security/advisory/2026-02-18/#SECURITY-3669
- https://github.com/advisories/GHSA-85h6-5m3v-gx37
- https://nvd.nist.gov/vuln/detail/CVE-2026-27099
- 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