---
cve: "CVE-2026-85056"
severity: "HIGH"
cvss: 8.2
epss: "26.5%"
vendor: "zitadel"
kev: false
exploited: false
published: "2026-09-24 18:19:04"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-26T18:10:32+02:00"
---

# CVE-2026-85056

> 8.2 HIGH · 🧪 PoC

## Beschreibung

ZITADEL is an open source identity management platform. From 4.0.0 until 4.16.1, ZITADEL Login V2 creates a browser session after password verification and can reuse that session for a later authentication request without verifying a user's enrolled TOTP, OTP, or U2F second factor. When the MFA step is abandoned and login starts again, session-validity checks require MFA only when the organization enables Force MFA or Force MFA for local users only, so a voluntarily enrolled factor can be skipped while completing an OIDC or SAML callback for a customer application. Login V1, the ZITADEL Console, Management and Admin APIs, and user self-management are not affected. This issue is fixed in version 4.16.1.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 049dbb25a56587fb3980c85c99819cad69f637db (Commit)
- 56f4798ed31fc1cfcd9a0e7f6f0152289d2fdc43 (Commit)

## Referenzen

- <https://github.com/zitadel/zitadel/security/advisories/GHSA-9993-rfwp-rhwf>
- <https://github.com/zitadel/zitadel/commit/049dbb25a56587fb3980c85c99819cad69f637db>
- <https://github.com/zitadel/zitadel/commit/56f4798ed31fc1cfcd9a0e7f6f0152289d2fdc43>
- <https://github.com/zitadel/zitadel/releases/tag/v4.16.1>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-85056) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_