CVE-2026-29191
published 2026-03-07CVE-2026-29191: 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…
PriorityP348critical9.3CVSS 3.1
AVNACLPRNUIRSCCHIHAN
EPSS
0.40%
32.0th percentile
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.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| github.com | zitadel_zitadel | >= 4.0.0 < 4.12.0 | 4.12.0 |
| github.com | zitadel_zitadel_v2 | >= 4.0.0 < 4.12.0 | 4.12.0 |
| zitadel | zitadel | — | — |
| zitadel | zitadel | >= 4.0.0 < 4.12.0 | 4.12.0 |
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OSV
ZITADEL has 1-Click Account Takeover via XSS in /saml-post Endpoint in github.com/zitadel/zitadel
osv·2026-03-10
CVE-2026-29191 ZITADEL has 1-Click Account Takeover via XSS in /saml-post Endpoint in github.com/zitadel/zitadel
ZITADEL has 1-Click Account Takeover via XSS in /saml-post Endpoint in github.com/zitadel/zitadel
ZITADEL has 1-Click Account Takeover via XSS in /saml-post Endpoint in github.com/zitadel/zitadel.
NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions.
(If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.)
The additional affected modules and versions are: github.com/zitadel/zitadel from v4.0.0 before v4.12.0.
OSV
ZITADEL has 1-Click Account Takeover via XSS in /saml-post Endpoint
osv·2026-03-04
CVE-2026-29191 [CRITICAL] ZITADEL has 1-Click Account Takeover via XSS in /saml-post Endpoint
ZITADEL has 1-Click Account Takeover via XSS in /saml-post Endpoint
### Summary
A vulnerability was discovered in Zitadel's login V2 interface that allowed a possible account takeover.
### Impact
Zitadel exposes an HTTP endpoint named /saml-post. This endpoint is used for handling requests to SAML IdPs and accepts two HTTP GET parameters: url and id. When these parameters are supplied, users’ browsers auto-submit an HTTP POST request to the provided url parameter.
The endpoint insecurely redirects users using the provided url GET parameter. As a result, by specifying a javascript: scheme, malicious JS code could be executed on Zitadel users’ browsers.
The endpoint also reflects user-supplied input in the server response, without HTML-encoding it. As a result, it is possible to inject
GHSA
ZITADEL has 1-Click Account Takeover via XSS in /saml-post Endpoint
ghsa·2026-03-04
CVE-2026-29191 [CRITICAL] CWE-79 ZITADEL has 1-Click Account Takeover via XSS in /saml-post Endpoint
ZITADEL has 1-Click Account Takeover via XSS in /saml-post Endpoint
### Summary
A vulnerability was discovered in Zitadel's login V2 interface that allowed a possible account takeover.
### Impact
Zitadel exposes an HTTP endpoint named /saml-post. This endpoint is used for handling requests to SAML IdPs and accepts two HTTP GET parameters: url and id. When these parameters are supplied, users’ browsers auto-submit an HTTP POST request to the provided url parameter.
The endpoint insecurely redirects users using the provided url GET parameter. As a result, by specifying a javascript: scheme, malicious JS code could be executed on Zitadel users’ browsers.
The endpoint also reflects user-supplied input in the server response, without HTML-encoding it. As a result, it is possible to inject
No detection rules found.
No public exploits indexed.
2026-03-07
Published