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.
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-8g9r-9wjw-37j4 Keycloak: Improper Access Control Leading to MFA Deletion and Account Takeover in Keycloak Account REST API
Fixes

Solution

No solution given by the vendor.


Workaround

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

History

Thu, 12 Mar 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 11 Mar 2026 16:30:00 +0000

Type Values Removed Values Added
Title org.keycloak.services.resources.account: Improper Access Control Leading to MFA Deletion and Account Takeover in Keycloak Account REST API Org.keycloak.services.resources.account: improper access control leading to mfa deletion and account takeover in keycloak account rest api
First Time appeared Redhat
Redhat build Keycloak
Redhat jboss Enterprise Application Platform
Redhat jbosseapxp
Redhat red Hat Single Sign On
CPEs cpe:/a:redhat:build_keycloak:
cpe:/a:redhat:jboss_enterprise_application_platform:8
cpe:/a:redhat:jbosseapxp
cpe:/a:redhat:red_hat_single_sign_on:7
Vendors & Products Redhat
Redhat build Keycloak
Redhat jboss Enterprise Application Platform
Redhat jbosseapxp
Redhat red Hat Single Sign On
References

Wed, 04 Mar 2026 11:00:00 +0000

Type Values Removed Values Added
First Time appeared Keycloak
Keycloak keycloak
Vendors & Products Keycloak
Keycloak keycloak

Tue, 03 Mar 2026 00:15:00 +0000

Type Values Removed Values Added
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.
Title org.keycloak.services.resources.account: Improper Access Control Leading to MFA Deletion and Account Takeover in Keycloak Account REST API
Weaknesses CWE-284
References
Metrics threat_severity

None

cvssV3_1

{'score': 4.2, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N'}

threat_severity

Moderate


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-03-12T16:19:51.996Z

Reserved: 2026-03-02T09:54:23.687Z

Link: CVE-2026-3429

cve-icon Vulnrichment

Updated: 2026-03-12T15:43:40.897Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-03-11T17:16:59.270

Modified: 2026-03-12T21:08:22.643

Link: CVE-2026-3429

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-03-02T00:00:00Z

Links: CVE-2026-3429 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-03-03T08:47:04Z

Weaknesses