CVE-2026-53441: Jenkins

Medium severity, CVSS 5.4. EPSS: 0.3% chance of exploitation in the next 30 days.

Jenkins 2.483 through 2.567 (both inclusive), LTS 2.492.1 through 2.555.2 (both inclusive) does not escape the user-provided description of a generic offline cause that could be set through the `POST config.xml` API, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Agent/Configure permission.

Affected products

• Jenkins Jenkins: from 2.483, before 2.568 (fixed in 2.568); from 2.492.1, before 2.555.3 (fixed in 2.555.3)

Published 2026-06-10. Last modified 2026-07-06.