CVE-2026-124466OpenEMR before 8.4.0 Unauthenticated SSRF via OAuth2 Client jwks_uri

Descripción

OpenEMR before 8.4.0 contains a server-side request forgery vulnerability that allows unauthenticated attackers to make the server send HTTP requests by registering an OAuth2 client with an unvalidated jwks_uri. Attackers can trigger the fetch via the token introspection endpoint with an unsigned client_assertion to probe internal services and reach cloud metadata endpoints.

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• GitHub Security Advisory (GHSA-mf6h-xc62-9fg4) vendor-advisory
• VulnCheck Advisory: OpenEMR before 8.4.0 Unauthenticated SSRF via OAuth2 Client jwks_uri third-party-advisory