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Back to active CVEs
High · CVSS 8.7CVE-2026-124483

OpenEMR before 8.4.0 Improper Authorization via Prescription REST APICVE-2026-124483

Answer in brief

CVE-2026-124483 records a High severity (CVSS 8.7) vulnerability in OpenEMR before 8.4.0 Improper Authorization via Prescription REST API. The current sources do not mark it as known exploited. The current feed maps openemr/openemr (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 8, 2026Updated Nov 8, 2026Source checked Nov 8, 2026First seen by HOL Nov 8, 2026Material review Nov 8, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.7
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 8.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps openemr/openemr (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
openemr/openemrgeneric>=0 <8.4.08.4.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for openemr/openemr.
  2. 2Review the reported fix. Update openemr/openemr to 8.4.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Nov 8, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 8, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 8, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referencevulncheck.com
Upstream source description

OpenEMR before 8.4.0 contains an incorrect authorization vulnerability because the prescription REST API routes check the patients.med ACL instead of patients.rx and request no specific permission bit, so read-only Medical/History access passes the check. Authenticated staff users can reuse the UI-exposed APICSRFTOKEN to enumerate prescription UUIDs, forge prescriptions for arbitrary patients, and deactivate existing prescriptions tenant-wide.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • OpenEMR before 8.4.0 SQL Injection via OnsiteDocument Query APISame openemr/openemr package
  • OpenEMR 7.0.1 before 8.4.0 OneTimeAuth Token Replay and PIN Brute ForceSame openemr/openemr package
  • OpenEMR before 8.3.0 Arbitrary File Read and Write via FaxSMS disposeDocumentSame openemr/openemr package
  • OpenEMR before 8.3.0 IDOR via OnsitePortalActivityController Update EndpointSame openemr/openemr package
  • OpenEMR before 8.3.0 Stored XSS via CCDA/CCD Preview XSLT AttributesSame openemr/openemr package
  • OpenEMR before 8.4.0 Missing Authorization via FHIR Media and QuestionnaireResponse RoutesSame openemr/openemr package

Record context

Vulnerability class
CSRF
EPSS
Not reported
CWE IDs
CWE-863
Source
CVE List V5
Source checked
Nov 8, 2026
References
2 linked sources
Open source record