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Vulnerabilities CVE-2026-56666

CVE-2026-56666

Medium
Open
TLP:CLEAR

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

NVD CVE.org
Critical Infrastructure

AI Analysis

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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.

Details

CVSS Score
4.8
EPSS Score
0.19%

8.9th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Confidence
90%
Published
Jul 10, 2026
Last Modified
Jul 13, 2026
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