CVE-2021-21678: Jenkins SAML Plugin 2.0.7 and earlier allows attackers to craft URLs that would bypass the CSRF protection...

Security readout for executives and security teams

Jenkins instances using the SAML Plugin 2.0.7 or earlier could have CSRF protection bypassed through attacker-crafted URLs. In business terms, a user could be tricked into triggering unintended Jenkins actions if other preconditions are met. The source bundle does not provide CVSS, confirmed exploit activity, or detailed impact outcomes. Exposure is limited to Jenkins deployments with Jenkins SAML Plugin 2.0.7 or earlier installed. The source bundle does not identify specific Jenkins core versions, public internet exposure requirements, or whether an attacker needs authentication. Prioritize review for Jenkins environments that use SAML authentication, especially production CI/CD systems. Urgency is meaningful because Jenkins can control builds and deployments, but severity remains uncertain because the bundle lacks CVSS, exploitation evidence, and complete impact detail. Mitigation focus: Check Jenkins advisory SECURITY-2469 for vendor remediation guidance.; Inventory Jenkins instances for the SAML Plugin and installed version.; Treat SAML Plugin 2.0.7 or earlier as potentially affected..

Prepared

Jun 2, 2026, 18:39 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.