CVEvulnerability
CVE-2026-3429
4.2 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2026-03-11
- Last modified
- 2026-08-18
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 4.2 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
- Weaknesses
- CWE-284
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 configurations
• redhat build of keycloak (>= 26.4 < 26.4.11)
Related
Weakness · CWE (1)
- CWE-284 Improper Access Control weakness
References
- https://access.redhat.com/errata/RHSA-2026:6477 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:6478 Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2026-3429 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2443771 Issue Tracking, Vendor Advisory