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

Severity: Critical

CVSS Score: 9.3

ZITADEL is an open source identity management platform. From version 4.0.0 to 4.11.1, a vulnerability in Zitadel's login V2 interface was discovered that allowed a possible account takeover via XSS in /saml-post Endpoint. This issue has been patched in version 4.12.0.