BIT-JENKINS-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 "Mark temporarily offline" offline cause, resulting in a stored cross-site scripting XSS vulnerability exploitable by attackers with Agent/Configure or...

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 "Mark temporarily offline" offline cause, resulting in a stored cross-site scripting XSS vulnerability exploitable by attackers with Agent/Configure or...

CVE-2026-27099

Jenkins CVE-2026-27099 affects Jenkins versions 2.483–2.550 (and LTS 2.492.1–2.541.1) where the description for the “Mark temporarily offline” offline cause is not escaped, causing stored cross-site scripting (XSS). The vulnerability can be exploited by attackers with Agent/Configure or Agent/Dis...