CVE-2026-29191
Critical
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.
SeverityCritical
CVSS9.3
Exploit probability—
ProductZitadel
PublishedMar 7, 2026
First seenMar 7, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- zitadel zitadel4.12.0 or later
- github.com/zitadel/zitadel4.12.0 or later
- github.com/zitadel/zitadel/v24.12.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| zitadel zitadel | 4.0.0 ≤ v < 4.12.0 | 4.12.0 |
| github.com/zitadel/zitadelGo | 4.0.0 ≤ v < 4.12.0, No range specified | 4.12.0 |
| github.com/zitadel/zitadel/v2Go | 4.0.0 ≤ v < 4.12.0 | 4.12.0 |
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