Description
In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, Jenkins does not rotate the session when a user is authenticated via the "remember me" cookie, allowing attackers able to serve content on the same site as Jenkins to set a known session cookie in the victim's browser, which after the victim authenticates via the "remember me" cookie, grants the attacker access to Jenkins as that user.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Jenkins Project | Jenkins | — | — |
Advisories 1
- WID-SEC-2026-3166 Jenkins: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 21, 2026
References
- Jenkins Security Advisory 2026-09-02 vendor-advisory