CVE-2026-124466 — Openemr
HIGHCVE-2026-124466 is a high-severity (CVSS 7.2) Server-Side Request Forgery (SSRF) vulnerability. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.
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…
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.
Detection & mitigation playbook
VulnerabilityDetect
Identify every host running the affected component and compare the installed build against the fixed version below — for source-built or distro-packaged software the version string, not a lockfile, is the source of truth (`dpkg -l`, `rpm -q`, or the binary's own `--version`).
Remediation status
The records we use list no fixed release for CVE-2026-124466. Check the upstream advisory for a patched version, and apply the exposure-reduction steps below in the meantime.
Mitigate without a patch
Restrict outbound requests from the affected component to an allowlist of hosts, block access to link-local and internal address ranges at the network layer, and require authentication on internal services so a forged request cannot reach them unauthenticated.
Frequently Asked Questions
Is CVE-2026-124466 in your dependencies?
Find it across your dependency tree, including transitive dependencies.