Jenkins Improper Neutralization of Input During Web Page Generation (Cross-site Scripting) Vulnerability - CVE-2026-27099
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 quotMark temporarily offlinequot offline cause resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Agent/Configure or Agent/Disconnect permission.