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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.

PUBLISHED Reserved 2026-06-09 | Published 2026-06-10 | Updated 2026-06-10 | Assigner jenkins

Product status

Default status
affected

2.568 (maven) before *
unaffected

2.555.3 (maven) before 2.555.*
unaffected

References

www.jenkins.io/security/advisory/2026-06-10/ (Jenkins Security Advisory 2026-06-10) vendor-advisory

cve.org (CVE-2026-53436)

nvd.nist.gov (CVE-2026-53436)

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