CVE-2026-105209

CRITICAL CVSS 4.0: 9.3 EPSS 0.22%
Updated Oct 06, 2026
Zitadel
Parameter Value
CVSS 9.3 (CRITICAL)
Affected Versions before 4.17.1
Fixed In 4.17.1
Type CWE-862 (Missing Authorization)
Vendor Zitadel
Public PoC No

ZITADEL 3.x before 3.4.15 and 4.x before 4.17.1 contains an improper authorization vulnerability: when issuing passkey or passwordless enrollment codes, it checks only the organization in the x-zitadel-orgid header, not the target user's organization. Attackers with user-write permission in one organization can obtain an enrollment code for a user in another organization on the same instance and register their own authenticator to take over that account.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
None
No disruption

CVSS Vector v4.0

Vulnerable Products 2

Configuration From (including) Up to (excluding)
Zitadel Zitadel
cpe:2.3:a:zitadel:zitadel:*:*:*:*:*:*:*:*
— 4.17.1
Zitadel Zitadel
cpe:2.3:a:zitadel:zitadel:*:*:*:*:*:*:*:*
— 3.4.15