CVE-2026-3429
MEDIUM
4.2
Our Analysis: esv
Our model has classified this vulnerability as relevant to esv Systems, helping your team prioritize efforts effectively.
Published Date
March 11, 2026
Last Modified
March 11, 2026
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
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.