CVE-2020-2103: Jenkins

Medium severity, CVSS 5.4. EPSS: 7% chance of exploitation in the next 30 days.

Jenkins 2.218 and earlier, LTS 2.204.1 and earlier exposed session identifiers on a user's detail object in the whoAmI diagnostic page.

Affected products

• Jenkins Jenkins: up to and including 2.204.1; up to and including 2.218

Published 2020-01-29. Last modified 2026-06-17.