Missing Authorization in Keycloak - CVE-2026-79652
Published: August 25, 2026 / Updated: September 5, 2026
Vulnerability identifier: #VU146982
CSH Severity: Low
CVSS v4: 6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-79652
CWE-ID: CWE-862
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to obtain unauthorized access to a user account at a consent-gated client.
The vulnerability exists due to missing authorization in the JWT Bearer authorization grant implementation within the keycloak-services component when issuing access tokens through the JWT Bearer grant. A remote user can present valid client credentials and a trusted identity provider assertion to bypass the user-consent requirement and obtain unauthorized access to a user account at a consent-gated client.
Affected software
Keycloak
How to mitigate CVE-2026-79652
Install security update from vendor's website.
Keycloak - update to 26.7.3