CVE-2026-29191

EUVD-2026-10148
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.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.3 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Affected Products (NVD)
VendorProductVersion
zitadelzitadel
4.0.0 ≤
𝑥
< 4.12.0
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/zitadel/zitadel/security/advisories/GHSA-pr34-2v5x-6qjq