CVEvulnerability
CVE-2026-1609
8.1 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-07-16
- Last modified
- 2026-08-09
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 8.1 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- CVSS 3.1 ([email protected])
- 8.1 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
- 8.1 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- Weaknesses
- CWE-284
Description
A flaw was found in Keycloak. When the JSON Web Token (JWT) authorization grant preview feature is enabled and a user account is disabled, Keycloak fails to validate the user’s disabled status during JWT authorization grant processing. A remote attacker with low privileges can exploit this improper access control vulnerability by presenting a valid assertion token from an external identity provider to obtain a JWT for a disabled user. This allows unauthorized access to sensitive resources.
Affected configurations
• redhat build of keycloak 26.5.2
Related
Weakness · CWE (1)
- CWE-284 Improper Access Control weakness
References
- https://access.redhat.com/security/cve/CVE-2026-1609 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2435257 Issue Tracking, Vendor Advisory
- https://github.com/keycloak/keycloak/issues/46144 Issue Tracking
- https://github.com/keycloak/keycloak/releases/tag/26.5.3 Release Notes
- https://access.redhat.com/security/cve/CVE-2026-1609 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2435257 Issue Tracking, Vendor Advisory
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-1609.json Vendor Advisory