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.
Metrics
Affected Vendors & Products
References
History
Mon, 05 Oct 2026 14:30:00 +0000
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| Metrics |
ssvc
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Sun, 04 Oct 2026 14:30:00 +0000
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| 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. | |
| Title | ZITADEL before 4.17.1 Unauthenticated MFA Enrollment via Login V1 Init Handlers | |
| First Time appeared |
Zitadel
Zitadel zitadel |
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| Weaknesses | CWE-287 | |
| CPEs | cpe:2.3:a:zitadel:zitadel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Zitadel
Zitadel zitadel |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-10-04T13:10:03.949Z
Updated: 2026-10-05T13:29:17.102Z
Reserved: 2026-10-04T13:02:21.188Z
Link: CVE-2026-105210
Updated: 2026-10-05T13:29:13.172Z
Status : Deferred
Published: 2026-10-04T15:16:32.170
Modified: 2026-10-05T14:17:18.000
Link: CVE-2026-105210
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