CVE-2026-105210 — ZITADEL before 4.17.1 Unauthenticated MFA Enrollment via Login V1 Init Handlers
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 …
Published: 2026-10-04 · CVSS: 8.8 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7