CVE-2025-27625: Jenkins

Medium severity, CVSS 4.3. EPSS: 0.6% chance of exploitation in the next 30 days.

In Jenkins 2.499 and earlier, LTS 2.492.1 and earlier, redirects starting with backslash (`\`) characters are considered safe, allowing attackers to perform phishing attacks by having users go to a Jenkins URL that will forward them to a different site, because browsers interpret these characters as part of scheme-relative redirects.

Affected products

• Jenkins Jenkins: before 2.492.2 (fixed in 2.492.2); before 2.500 (fixed in 2.500)

Published 2025-03-05. Last modified 2026-06-17.