CVE-2026-105212
Published:October 04, 2026
Updated:October 13, 2026
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.
Affected Packages
https://github.com/zitadel/zitadel.git (GITHUB):
Affected version(s) >=v4.0.0 <v4.16.2Fix Suggestion:
Update to version v4.16.2https://github.com/zitadel/zitadel.git (GITHUB):
Affected version(s) >=v1.26.0 <v3.4.14Fix Suggestion:
Update to version v3.4.14github.com/zitadel/zitadel (GO):
Affected version(s) >=v4.0.0 <v4.16.2Fix Suggestion:
Update to version v4.16.2github.com/zitadel/zitadel (GO):
Affected version(s) >=v1.80.0-lower-headers.1 <v3.4.14Fix Suggestion:
Update to version v3.4.14Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Improper Authentication
EPSS
Base Score:
0.32