CVE-2026-29191: ZITADEL has 1-Click Account Takeover via XSS in /saml-post Endpoint

March 4, 2026 (updated March 9, 2026)

A vulnerability was discovered in Zitadel’s login V2 interface that allowed a possible account takeover.

References

github.com/advisories/GHSA-pr34-2v5x-6qjq
github.com/zitadel/zitadel
github.com/zitadel/zitadel/security/advisories/GHSA-pr34-2v5x-6qjq
nvd.nist.gov/vuln/detail/CVE-2026-29191

Code Behaviors & Features

Detect and mitigate CVE-2026-29191 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →