CVE-2026-105207

ZITADEL 3.0.0 through 3.4.15 and 4.0.0 before 4.17.3 creates links between user accounts and external identity providers without verifying a primary factor or the caller's permission, including on identify-only Login V2 sessions and via the User Service V2 AddIDPLink endpoint. An unauthenticated...

EUVD-2026-92100

ZITADEL 3.0.0 through 3.4.15 and 4.0.0 before 4.17.3 creates links between user accounts and external identity providers without verifying a primary factor or the caller's permission, including on identify-only Login V2 sessions and via the User Service V2 AddIDPLink endpoint. An unauthenticated...

CVE-2026-105207 ZITADEL before 4.17.3 Account Takeover via External IdP Linking

ZITADEL 3.0.0 through 3.4.15 and 4.0.0 before 4.17.3 creates links between user accounts and external identity providers without verifying a primary factor or the caller's permission, including on identify-only Login V2 sessions and via the User Service V2 AddIDPLink endpoint. An unauthenticated...

CVE-2026-105207 ZITADEL before 4.17.3 Account Takeover via External IdP Linking

ZITADEL 3.0.0 through 3.4.15 and 4.0.0 before 4.17.3 creates links between user accounts and external identity providers without verifying a primary factor or the caller's permission, including on identify-only Login V2 sessions and via the User Service V2 AddIDPLink endpoint. An unauthenticated...

CVE-2026-105207 ZITADEL before 4.17.3 Account Takeover via External IdP Linking

ZITADEL 3.0.0 through 3.4.15 and 4.0.0 before 4.17.3 creates links between user accounts and external identity providers without verifying a primary factor or the caller's permission, including on identify-only Login V2 sessions and via the User Service V2 AddIDPLink endpoint. An unauthenticated...

CVE-2026-105207

ZITADEL versions 3.0.0 through 3.4.15 and 4.0.0 before 4.17.3 are vulnerable to an account takeover due to improper verification when linking external identity providers. The User Service V2 AddIDPLink endpoint and identify-only Login V2 sessions fail to verify a primary factor or the caller's pe...

CVE-2026-105207: Missing Authentication for Critical Function

ZITADEL 3.0.0 through 3.4.15 and 4.0.0 before 4.17.3 creates links between user accounts and external identity providers without verifying a primary factor or the caller's permission, including on identify-only Login V2 sessions and via the User Service V2 AddIDPLink endpoint. An unauthenticated...

PT-2026-104631

Name of the Vulnerable Software and Affected Versions ZITADEL versions 3.0.0 through 3.4.15 ZITADEL versions 4.0.0 through 4.17.2 Description An issue exists where links are created between user accounts and external identity providers without verifying a primary factor or the caller's permission...