CVE-2021-21658: Jenkins Nuget

Critical severity, CVSS 9.1. EPSS: 1.5% chance of exploitation in the next 30 days.

Jenkins Nuget Plugin 1.0 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks.

Affected products

• Jenkins Nuget: up to and including 1.0

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