VULNERABILITY INTELLIGENCE

CVE-2026-3429

CVSS score4.2 MEDIUM
EPSS probability0.26%
CISA KEVNot currently listed
Published2026-03-11
Last modified2026-08-18
CVSS vectorCVSS: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.

Weakness classification

  • CWE-284: Improper Access Control

Primary references