CVE-2026-56666 — ZITADEL: Auto-linking by email: IdP-side email verification is not checked
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…
Published: 2026-07-10 · CVSS: 4.8 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7