CVE-2021-21689: Jenkins

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

FilePath#unzip and FilePath#untar were not subject to any agent-to-controller access control in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier.

Affected products

• Jenkins Jenkins: before 2.303.3 (fixed in 2.303.3); before 2.319 (fixed in 2.319)

Published 2021-11-04. Last modified 2026-06-17.