CVE-2021-21657: Jenkins Filesystem Trigger

High severity, CVSS 8.8. EPSS: 1.6% chance of exploitation in the next 30 days.

Jenkins Filesystem Trigger Plugin 0.40 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks.

Affected products

• Jenkins Filesystem Trigger: up to and including 0.40

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