Medium4.2Red Hat Linux

Medium [CVE-2026-3429] Improper Access Control Leading to MFA Deletion and Account Takeover in Keycloak Account REST API

This medium-severity Red Hat Linux advisory covers CVE-2026-3429 affecting rhbk/keycloak-operator-bundle:26.4.11, rhbk/keycloak-rhel9-operator:26.4, rhbk/keycloak-rhel9:26.4.

CVE-2026-3429 Published Mar 2, 2026

CVE-2026-3429

Affected products & platforms

Red Hat LinuxUnclassified

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Summary

Improper Access Control Leading to MFA Deletion and Account Takeover in Keycloak Account REST API. Red Hat rates this moderate (CVSS 4.2).

Weakness: CWE-284. Affected package(s): rhbk/keycloak-operator-bundle:26.4.11, rhbk/keycloak-rhel9, rhbk/keycloak-rhel9-operator:26.4, rhbk/keycloak-rhel9:26.4.

Resolved in Red Hat advisory RHSA-2026:6478 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Red Hat Enterprise Linux.

Affected versions

rhbk/keycloak-operator-bundle:26.4.11-1
rhbk/keycloak-rhel9
rhbk/keycloak-rhel9-operator:26.4-14
rhbk/keycloak-rhel9:26.4-14

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions

RHSA-2026:6478

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Update the affected package(s) to the fixed version shipped in RHSA-2026:6478 (`sudo dnf update` / `yum update`).

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

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