Description
The OAuth authorization endpoint in Jenkins Bitbucket Server Integration Plugin 6.0.1 and earlier reads the `oauth_callback` URL from the submitted form rather than from the server-side stored request token, allowing attackers to hijack the OAuth flow and obtain an access token on behalf of the victim.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Jenkins Project | Jenkins Bitbucket Server Integration Plugin | ≤ 6.0.1 | — |
Advisories 1
- WID-SEC-2026-3428 Jenkins Plugins: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 21, 2026
References
- Jenkins Security Advisory 2026-09-16 vendor-advisory