Description
ZITADEL 3.x before 3.4.15 and 4.x before 4.17.1 contains a missing authentication flaw in the hosted Login V1 UI, whose second-factor enrollment and initialization handlers act on an identify-only session before any primary factor is verified. Attackers knowing only a victim's login name can enroll attacker-controlled TOTP, OTP-SMS, OTP-Email, or U2F factors, overwrite the verified phone number, and enumerate users through discrepant errors.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| zitadel | zitadel | 4.0.0 – < 4.17.1, < 3.4.15 | 4.17.1 |
References
- GitHub Security Advisory (GHSA-72q5-mv5c-vxv4) vendor-advisory
- VulnCheck Advisory: ZITADEL before 4.17.1 Unauthenticated MFA Enrollment via Login V1 Init Handlers third-party-advisory