ZITADEL before 4.17.1 contains an authentication bypass vulnerability in Login V2 that allows unauthenticated attackers to take over accounts by… (CVE-2026-105211)
Description
ZITADEL before 4.17.1 contains an authentication bypass vulnerability in Login V2 that allows unauthenticated attackers to take over accounts by obtaining OTP codes via the returnCode delivery type. Attackers knowing a login name of a victim with OTP-Email and OTP-SMS enrolled can read both codes from server-action responses to gain MFA-authenticated sessions, including administrator takeover.
CVSS v3.1
Score 8.1high
Weaknesses
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-mq63-7hcv-jfrc
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-105211"]
- Database Specific Severity
- CRITICAL
- Cvss Version
- 3.1
Threat ID: 6ac2c0972cdf04f656522e3a
Added to database: 10/04/2026, 21:09:43 UTC
Last updated: 10/04/2026, 21:09:43 UTC
Views: 1
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