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CVE PROGRAM SOURCE RECORD4.8 Medium

CVE-2026-56666

ZITADEL: Auto-linking by email: IdP-side email verification is not checked

Description

ZITADEL is an open source identity management platform. Prior to 4.15.3, ZITADEL's external identity provider handler checks that the local user's email is verified but does not verify that the external IdP confirmed ownership of the same email before auto-linking by email, allowing a permissive provider account with a victim email address to be linked to the victim's local account. This issue is fixed in version 4.15.3.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

zitadel zitadel

  • < 4.15.3affected

References