CVE-2026-105212

High

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.

SeverityHigh

CVSS7.5

Exploit probability—

ProductZitadel

PublishedOct 4, 2026

First seenOct 4, 2026

Weakness typeCWE-287Improper authentication

How to fix

Update

zitadel zitadel4.16.2, 3.4.14 or later

Vendor advisories

github.com/zitadel/zitadel/security/advisories/GHSA-45f2-5q3r-xgg6

Affected products

Product	Affected versions	Fixed in
zitadel zitadel	4.0.0 ≤ v < 4.16.2, v < 3.4.14	4.16.2, 3.4.14

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.