CVE-2026-105212

ZITADEL versions prior to 3.4.14 and 4.16.2 are vulnerable to an authentication bypass in the hosted Login V1 and Login V2 UIs. The root cause is the system's acceptance of passkey or other authenticator enrollments during identify-only login sessions before a primary factor is verified. This all...

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 returnCode delivery type. Attackers knowing a login name of a victim with OTP-Email and OTP-SMS enrolled can read both codes...

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 returnCode delivery type. Attackers knowing a login name of a victim with OTP-Email and OTP-SMS enrolled can read both codes...

CVE-2026-105211

ZITADEL versions before 4.17.1 are vulnerable to an authentication bypass in Login V2 . This flaw allows unauthenticated attackers to intercept OTP codes delivered via the returnCode delivery type. By knowing a victim's login name who has OTP-Email and OTP-SMS enrolled, an attacker can read both ...

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 returnCode delivery type. Attackers knowing a login name of a victim with OTP-Email and OTP-SMS enrolled can read both codes...

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 on an identify-only session before any primary factor is verified. Attackers knowing only a victim's login name can enro...

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 initialization handlers act on an identify-only session before any primary factor is verified. Attackers knowing only a victim's login name can enro...

EUVD-2026-92103

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 enro...

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 on an identify-only session before any primary factor is verified. Attackers knowing only a victim's login name can enro...

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 on an identify-only session before any primary factor is verified. Attackers knowing only a victim's login name can enro...

CVE-2026-105210

ZITADEL versions 3.x before 3.4.15 and 4.x before 4.17.1 are vulnerable to a missing authentication flaw in the hosted Login V1 UI . The root cause is that second-factor enrollment and initialization handlers process requests on an identify-only session before the primary factor is verified. An a...

CVE-2026-105208 ZITADEL before 4.17.3 Session Hijacking via Forgeable IdP Intent Tokens

ZITADEL 4.x before 4.17.3 and 3.x through 3.4.15 protects IdP intent tokens with unauthenticated, malleable encryption, allowing authenticated users to tamper with their own token so it is accepted for another user's external login intent. An attacker who predicts a victim's in-flight intent...

EUVD-2026-92044

W vincent-peugnet/wcms through 3.18.0 contains a stored cross-site scripting vulnerability that allows unauthenticated attackers to inject scripts via the login user field and visitor comment website field. Attackers can submit failed logins rendered unescaped in the adminlog.php log viewer, or...

CVE-2026-105124

W vincent-peugnet/wcms through 3.18.0 contains a stored cross-site scripting vulnerability that allows unauthenticated attackers to inject scripts via the login user field and visitor comment website field. Attackers can submit failed logins rendered unescaped in the adminlog.php log viewer, or...

CVE-2026-105210: Improper Authentication

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 enro...

PT-2026-104635

Name of the Vulnerable Software and Affected Versions ZITADEL versions prior to 4.17.1 Description An authentication bypass exists in Login V2 that allows unauthenticated attackers to take over accounts. Attackers who know the login name of a victim enrolled in OTP-Email and OTP-SMS can obtain...

CVE-2026-105215: Authentication Bypass by Spoofing

ZITADEL before 3.4.14 and 4.x before 4.16.2 contains an authentication bypass in the hosted Login V1 UI because the 'external account not found' registration endpoint trusts client-supplied external identity fields without a completed IdP callback. Unauthenticated attackers can submit forged...

CVE-2026-105213: Improper Authentication

ZITADEL 4.x before 4.17.1 does not check an organization's inactive state during Login V2 authentication, verifying only the individual user's status. Users of a deactivated organization who hold valid credentials, an existing session, or a refresh token can still sign in, create sessions, and...

CVE-2026-105212: Improper Authentication

ZITADEL 3.x before 3.4.14 and 4.x before 4.16.2 contains an authentication bypass in the hosted Login V1 and Login V2 UIs that accepts passkey or other authenticator enrollment on identify-only login sessions, before any primary factor is verified. Unauthenticated attackers knowing only a victim'...

CVE-2026-105211: Exposure of Sensitive Information to an Unauthorized Actor

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...