CVE-2026-29191

Name: CVE-2026-29191
Creator: NVD / NIST
Published: 2026-03-07T15:15:55.557+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.3/10EPSS 0.40%

Last modified Jun 17, 2026

CVE-2026-29191 is a critical-severity vulnerability rated 9.3/10 on the CVSS scale. 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. EPSS estimates a 0.40% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.3/10

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

EPSS Probability

0.40%

32.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Zitadel	Zitadel	>= 4.0.0, < 4.12.0

References

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

Timeline

Published: Mar 7, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-29191?

How severe is CVE-2026-29191?

CVE-2026-29191 has a CVSS score of 9.3/10 (CRITICAL severity). The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.

How do I fix CVE-2026-29191?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-29191?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST