CVE-2021-21631: Jenkins Cloud Statistics

Medium severity, CVSS 4.3. EPSS: 0.8% chance of exploitation in the next 30 days.

Jenkins Cloud Statistics Plugin 0.26 and earlier does not perform a permission check in an HTTP endpoint, allowing attackers with Overall/Read permission and knowledge of random activity IDs to view related provisioning exception error messages.

Affected products

• Jenkins Cloud Statistics: up to and including 0.26

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