CVE-2021-21630: Jenkins Extra Columns

Medium severity, CVSS 5.4. EPSS: 72.4% chance of exploitation in the next 30 days.

Jenkins Extra Columns Plugin 1.22 and earlier does not escape parameter values in the build parameters column, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Job/Configure permission.

Affected products

• Jenkins Extra Columns: up to and including 1.22

Published 2021-03-30. Last modified 2026-06-17.