---
id: CVE-2026-105212
title: >-
  ZITADEL 3.x before 3.4.14 and 4.x before 4.16.2 contains an authentication
  bypass in the hosted Login V1 and Login V2 UIs that accepts passkey or other
  authenticator enrollment on identify-only login sessions, before any primary
  factor i…
summary: >-
  ZITADEL 3.x before 3.4.14 and 4.x before 4.16.2 contains an authentication
  bypass in the hosted Login V1 and Login V2 UIs that accepts passkey or other
  authenticator enrollment on identify-only login sessions, before any primary
  factor i…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-287
vendor: zitadel
product: zitadel
affected:
  - zitadel < 4.16.2
  - zitadel < 3.4.14
published: '2026-10-04'
updated: '2026-10-04'
sourceUpdated: '2026-10-04T15:16:32.637'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-105212'
references:
  - url: 'https://github.com/zitadel/zitadel/security/advisories/GHSA-45f2-5q3r-xgg6'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/zitadel-before-3.4.14-and-4.16.2-account-takeover-via-passkey-enrollment
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-04T15:00:34.389Z'
---

## Overview

ZITADEL 3.x before 3.4.14 and 4.x before 4.16.2 contains an authentication bypass in the hosted Login V1 and Login V2 UIs that accepts passkey or other authenticator enrollment on identify-only login sessions, before any primary factor is verified. Unauthenticated attackers knowing only a victim's login name can register an attacker-controlled authenticator and log in as that user, bypassing existing passwords and MFA.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.