CVE-2026-29191

CRITICAL

ZITADEL 4.0.0-4.11.1 - Cross-Site Scripting via SAML-POST Endpoint

Title source: llm
STIX 2.1

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.

References (1)

Core 1
Core References

Scores

CVSS v3 9.3
EPSS 0.0040
EPSS Percentile 32.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-79
Status published
Products (2)
zitadel/zitadel 4.0.0 - 4.12.0 (2 CPE variants)Go
zitadel/zitadel 4.0.0 - 4.12.0
Published Mar 07, 2026
Tracked Since Mar 07, 2026