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CVE PROGRAM SOURCE RECORD4.2 Medium

CVE-2026-3429

Org.keycloak.services.resources.account: improper access control leading to mfa deletion and account takeover in keycloak account rest api

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Red Hat Red Hat build of Keycloak 26.4

Default version status: affected

  • 26.4.11-1 to < *unaffected

Red Hat Red Hat build of Keycloak 26.4

Default version status: affected

  • 26.4-14 to < *unaffected

Red Hat Red Hat build of Keycloak 26.4

Default version status: affected

  • 26.4-14 to < *unaffected

Red Hat Red Hat build of Keycloak 26.4.11

Default version status: unaffected

Red Hat Red Hat Build of Keycloak

Default version status: unaffected

Red Hat Red Hat Build of Keycloak

Default version status: unaffected

Red Hat Red Hat JBoss Enterprise Application Platform 8

Default version status: unaffected

Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack

Default version status: unaffected

Red Hat Red Hat Single Sign-On 7

Default version status: unaffected

References