---
cve: "CVE-2026-29191"
severity: "CRITICAL"
cvss: 9.3
epss: "40%"
vendor: "zitadel"
kev: false
exploited: false
published: "2026-03-07 15:15:55"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-14T07:20:59+02:00"
---

# CVE-2026-29191

> 9.3 CRITICAL · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Erforderlich | good |
| S Scope | Verändert | bad |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- f360bc52bd5ce35a8aec21870de22a3b38967081 (Commit)

## Referenzen

- <https://github.com/zitadel/zitadel/security/advisories/GHSA-pr34-2v5x-6qjq>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-29191) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_