CVE-2026-105211 — ZITADEL before 4.17.1 Authentication Bypass via Login V2 OTP returnCode
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 retu…
Published: 2026-10-04 · CVSS: 9.2 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7