CVE-2021-21659: Jenkins Urltrigger

High severity, CVSS 8.1. EPSS: 66.8% chance of exploitation in the next 30 days.

Jenkins URLTrigger Plugin 0.48 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks.

Affected products

• Jenkins Urltrigger: up to and including 0.48

Published 2021-05-25. Last modified 2026-06-17.