Server-Side Request Forgery (SSRF) in Keycloak - CVE-2026-1180

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Main Vulnerability Database Vulnerabilities #VU148930

Server-Side Request Forgery (SSRF) in Keycloak - CVE-2026-1180

Published: September 10, 2026


Vulnerability identifier: #VU148930
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-1180
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform blind server-side request forgery.

The vulnerability exists due to improper handling of jwks_uri in Keycloak OIDC Dynamic Client Registration when processing dynamic client registration requests. A remote attacker can provide a jwks_uri value to perform blind server-side request forgery.


Affected software

Keycloak
Red Hat build of Keycloak

How to mitigate CVE-2026-1180

Install security update from vendor's website.

Keycloak - update to 26.5.6
Red Hat build of Keycloak - update to 26.4.11

External References

Related Security Bulletins