CVE-2026-105212 ZITADEL before 3.4.14 and 4.16.2 Account Takeover via Passkey Enrollment
Attackers can take over user accounts by registering their own passkeys during unverified login sessions, bypassing all authentication factors.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-105212?
CVE-2026-105212 is a high-severity authentication bypass vulnerability in zitadel, published on 4 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-287
Which versions are affected by CVE-2026-105212?
How do I fix CVE-2026-105212?
No fix has been published for CVE-2026-105212 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-105212 being exploited?
There is no known exploitation of CVE-2026-105212 in the wild and no public exploit code.
Sources
Also known as GHSA-45f2-5q3r-xgg6, GHSA-4727-2r9w-rpch.