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CVE-2026-29191

CRITICAL CVSS 3.1: 9.3 EPSS 0.01%
Updated Mar 07, 2026
Zitadel
Parameter Value
CVSS 9.3 (CRITICAL)
Affected Versions 4.0.0 — 4.11.1
Fixed In 4.12.0
Type CWE-79 (Cross-Site Scripting (XSS))
Vendor Zitadel
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
Required
User action required

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
None
No disruption

CVSS Vector v3.1