Description
ZITADEL 3.0.0 before 4.18.0 contains a missing authentication vulnerability in the hosted Login V1 UI, where the change-username handler acts on the account bound to a login flow before any factor is verified. Unauthenticated attackers can submit a victim's login name and then post a new username to rename any active human user, including administrators, locking them out.
Related CPE's
Could not find any relations
References
CVSS impact metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
8.2 · High
Information
Source identifier
Vulnerability status
Deferred
Published
2026-10-12T17:17:34.547Z
1 hour agoLast modified
2026-10-12T17:17:34.700Z
1 hour ago