CVE-2026-109371 | BDVDB-2026-386413 Detail

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.

Impact#

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Exploit#

History#

1. Version 12026-10-12Record published in the CVE List.
2. Version 22026-10-15Most recent update recorded in the CVE List.