Not on CISA's list of exploited flaws, and not in the news we track.
9.3of 10, critical
Fix it in your code
Each opens with a short prompt that points at Global Hack Map's public runbook for CVE-2026-126473. Nothing runs until you send it.
OpenEMR before 8.4.0 contains OAuth scope canonicalization and containment flaws that allow unauthenticated attackers to obtain unapproved system-level FHIR access. Attackers can register a colon-form system:Patient.read client that bypasses approval, then request unregistered system/Patient.write scope to read, modify, and create Patient records.