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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Jenkins Project | Jenkins | — | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | org.jenkins-ci.main:jenkins-core | >= 2.556, < 2.568 | 2.568 | GHSA-3rqh-hch3-jhpc |
| Maven | org.jenkins-ci.main:jenkins-core | < 2.555.3 | 2.555.3 | GHSA-3rqh-hch3-jhpc |
Advisories 1
- WID-SEC-2026-1884 Jenkins: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 26, 2026
References
- Jenkins Security Advisory 2026-06-10 vendor-advisory