CVE-2026-3429
MEDIUM EPSS 16.3%
Published Mar 11, 20263mo ago · Modified Apr 2, 20262mo ago
4.2 CVSS 3.1
Published Mar 11, 2026 3mo ago
Last Modified Apr 2, 2026 2mo ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N Attack Vector Network
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Low
Availability None
Threat Intelligence
EPSS Exploit Probability
16.3% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-284
References 4
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:6477
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:6478
- access.redhat.com https://access.redhat.com/security/cve/CVE-2026-3429
- bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2443771
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.