CVSS 3.1
8.0 highCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:HCVE-2026-27099
High (8.0) in jenkins jenkins. EPSS 0.5% chance of exploitation in the next 30 days. Fixed in org.jenkins-ci.main:jenkins-core 2.541.2, 2.551.
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.
Severity
- EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 41% of CVEs (scores of 2026-10-31)
- CWE
- CWE-79
- Published
- Modified
- Record from
- the NVD, synced
Affected
- jenkins:jenkins
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-85h6-5m3v-gx37 | Maven | org.jenkins-ci.main:jenkins-core | >=2.542 <2.551 | 2.551 |
| GHSA-85h6-5m3v-gx37 | Maven | org.jenkins-ci.main:jenkins-core | >=2.483 <2.541.2 | 2.541.2 |