CVE-2026-84668: Jenkins Project Jenkins SAML Plugin

High severity, CVSS 8.8. EPSS: 0.4% chance of exploitation in the next 30 days.

Jenkins SAML Plugin 4.618.v441a_27fa_46d2 and earlier allows overwriting the SAML identity provider metadata file through Stapler data binding, allowing attackers to replace it with attacker-controlled content and authenticate as any user.

Affected products

• Jenkins Project Jenkins SAML Plugin: up to and including 4.618.v441a_27fa_46d2

Published 2026-09-02. Last modified 2026-09-03.