Jenkins · Jenkins · CVE-2025-27625
**Name of the Vulnerable Software and Affected Versions**
Jenkins versions 2.499 and earlier, LTS 2.492.1 and earlier
**Description**
The issue allows attackers to perform phishing attacks by having users go to a Jenkins URL that will forward them to a different site. This is because browsers interpret backslash (``) characters as part of scheme-relative redirects, and in Jenkins 2.499 and earlier, LTS 2.492.1 and earlier, redirects starting with these characters are considered safe.
**Recommendations**
For Jenkins versions 2.499 and earlier, update to version 2.500 or later.
For Jenkins LTS 2.492.1 and earlier, update to LTS 2.492.2 or later.
As a temporary workaround, consider restricting access to URLs starting with backslash (``) characters to minimize the risk of exploitation.