high8.2
CVE-2026-105210
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 initializa…
Impact
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
| Product | Affected versions |
|---|---|
| ZITADEL 3.X | before 3.4.15 |
| 4.X | before 4.17.1 |
Versions were read from the advisory text. No structured product data has been published for this record yet.