CVE-2026-109371 (GCVE-0-2026-109371)
Vulnerability from cvelistv5
Published
2026-10-12 16:05
Modified
2026-10-15 02:55
Severity ?
8.8 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
8.2 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
CWE
  • CWE-306 - Missing Authentication for Critical Function
Summary
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.
References
Impacted products
Vendor Product Version
zitadel zitadel Version: 3.0.0   ≤
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