CVE-2026-29191 CRITICAL

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

Vendor Zitadel

Product zitadel

Weakness CWE-79 · XSS

Published March 7, 2026

Last update March 9, 2026

View on NVD All CVEs

CVSS base score

9.3/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction Required

Confidentiality High

Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 7, 2026 CVE published

March 9, 2026 Record updated

External resources

03References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-29191 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/79.html

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04Related CVE

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