{"id":"CVE-2026-124466","published":"2026-11-08T14:18:14.650","lastModified":"2026-11-10T21:46:29.960","description":"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.","cvssScore":7.2,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","cwes":["CWE-918"],"vendors":[],"products":[],"references":[{"url":"https://github.com/openemr/openemr/security/advisories/GHSA-mf6h-xc62-9fg4","tags":[]},{"url":"https://www.vulncheck.com/advisories/openemr-before-8.4.0-unauthenticated-ssrf-via-oauth2-client-jwks-uri","tags":[]},{"url":"https://github.com/openemr/openemr/security/advisories/GHSA-mf6h-xc62-9fg4","tags":[]}],"exploitRefs":[{"url":"https://github.com/openemr/openemr/security/advisories/GHSA-mf6h-xc62-9fg4","tags":[]},{"url":"https://github.com/openemr/openemr/security/advisories/GHSA-mf6h-xc62-9fg4","tags":[]}],"hasPoc":true,"ai":null}