CVE-2026-29191 — CRITICAL (9.3)

Q: How severe is CVE-2026-29191?

CVE-2026-29191 has been rated CRITICAL with a CVSS base score of 9.3/10. This is considered a critical vulnerability requiring immediate attention.

Q: Is there a patch for CVE-2026-29191?

Check the references section above for vendor advisories and patch information. Affected products include: Zitadel Zitadel.

Vulnerability Description

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.

CVSS Score

9.3

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

NONE

Affected Products

Vendor	Product	Versions
Zitadel	Zitadel	>= 4.0.0, < 4.12.0

Related Weaknesses (CWE)

CWE-79

References

https://github.com/zitadel/zitadel/security/advisories/GHSA-pr34-2v5x-6qjqPatchVendor Advisory

FAQ

What is CVE-2026-29191?

CVE-2026-29191 is a vulnerability with a CVSS score of 9.3 (CRITICAL). 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...

How severe is CVE-2026-29191?

CVE-2026-29191 has been rated CRITICAL with a CVSS base score of 9.3/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-29191?

Check the references section above for vendor advisories and patch information. Affected products include: Zitadel Zitadel.