CVE-2026-42523: Jenkins GitHub

Critical severity, CVSS 9.0. EPSS: 0.5% chance of exploitation in the next 30 days.

Jenkins GitHub Plugin 1.46.0 and earlier improperly processes the current job URL as part of JavaScript implementing validation of the feature "GitHub hook trigger for GITScm polling", resulting in a stored cross-site scripting (XSS) vulnerability exploitable by non-anonymous attackers with Overall/Read permission.

Affected products

• Jenkins GitHub: before 1.46.0.1 (fixed in 1.46.0.1)

Published 2026-04-29. Last modified 2026-06-17.