CVE-2026-3429 | BDVDB-2026-319831 Detail

Description#

A flaw was identified in the Account REST API of Keycloak that allows a user authenticated at a lower security level to perform sensitive actions intended only for higher-assurance sessions. Specifically, an attacker who has already obtained a victim’s password can delete the victim’s registered MFA/OTP credential without first proving possession of that factor. The attacker can then register their own MFA device, effectively taking full control of the account. This weakness undermines the intended protection provided by multi-factor authentication.

Impact#

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Exploit#

History#

1. Version 12026-03-11Record published in the CVE List.
2. Version 22026-04-02Most recent update recorded in the CVE List.