CVE-2026-109371ZITADEL 3.0.0 before 4.18.0 Unauthenticated Username Change via Login V1

Beschreibung

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.

Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.

Betroffene Produkte und Versionen

Referenzen und Patches

• GitHub Security Advisory (GHSA-4hgj-wm6c-q7p2) vendor-advisory
• VulnCheck Advisory: ZITADEL 3.0.0 before 4.18.0 Unauthenticated Username Change via Login V1 third-party-advisory