CVE-2026-124482 OpenEMR before 8.4.0 Cross-Patient PHI Exfiltration via SMART Patient Launch
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-124482?
CVE-2026-124482 is a high-severity vulnerability in openemr, published on 8 Nov 2026.
Official description
OpenEMR before 8.4.0 contains an authorization bypass allowing low-privileged SMART standalone-launch users to bind arbitrary patient UUIDs into the OAuth token context. Attackers with only the patients|demo ACL can select a victim during authorization and read that patient's clinical notes and documents through patient-scoped DocumentReference and Binary FHIR endpoints.
Weakness: CWE-639
Which versions are affected by CVE-2026-124482?
How do I fix CVE-2026-124482?
No fix has been published for CVE-2026-124482 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-124482 being exploited?
There is no known exploitation of CVE-2026-124482 in the wild and no public exploit code.
Sources
Also known as GHSA-jhmg-9h4m-r2f5, GHSA-rm4j-gxwp-qh48.