Jenkins URL Redirection to Untrusted Site ('Open Redirect') Vulnerability (CVE-2026-53436) - Vulnerability Database

Jenkins URL Redirection to Untrusted Site ('Open Redirect') Vulnerability (CVE-2026-53436)

Description

Jenkins 2.567 and earlier, LTS 2.555.2 and earlier improperly determines that a redirect URL after login is legitimately pointing to Jenkins when it contains relative path segments (`./` or `../`), allowing attackers to perform phishing attacks.

References

CVE-2026-53436

Related Vulnerabilities

Severity

Medium

Classification