CVE-2026-27946 HIGH

CVE-2026-27946: ZITADEL Users Can Self-Verify Email/Phone via UpdateHumanUser API

Vendor Zitadel
Product zitadel
Weakness CWE-862 · Missing authorization
Published February 26, 2026
Last update February 26, 2026

CVSS base score

8.2/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N

What the vulnerability does

01Description

ZITADEL is an open source identity management platform. Prior to versions 4.11.1 and 3.4.7, a vulnerability in Zitadel's self-management capability allowed users to mark their email and phone as verified without going through an actual verification process. The patch in versions 4.11.1 and 3.4.7 resolves the issue by requiring the correct permission in case the verification flag is provided and only allows self-management of the email address and/or phone number itself. If an upgrade is not possible, an action (v2) could be used to prevent setting the verification flag on the own user.

Key dates

02Disclosure timeline

February 26, 2026 CVE published
February 26, 2026 Record updated