# CVE-2026-124450: OpenEMR fax/sms module broken access control and path traversal

Source: https://junglewise.ai/threats/cve-2026-124450-openemr-before-8-3-0-contains-a-broken-access-control-and-path  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-08. Updated: 2026-11-08  
License: CC BY 4.0 with a link back

CVE-2026-124450 · Severity: critical · CVSS 9.9 · Published 2026-11-08

OpenEMR is an open-source electronic health record system that manages patient data and medical records. A flaw in its fax/sms module allows authenticated low-privilege users to read sensitive files like database configuration and write arbitrary files to the server, potentially leading to remote code execution and complete compromise of patient records.

Technologies: [OpenEMR](https://junglewise.ai/threats/technologies/openemr-openemr). Vendors: [OpenEMR](https://junglewise.ai/threats/vendors/openemr).

## Quick answers

**Is CVE-2026-124450 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-124450 being exploited in the wild.

**How severe is CVE-2026-124450?** Critical severity, with a CVSS score of 9.9, published 8 November 2026.

**Which products and versions are affected?** OpenEMR before 8.3.0.

**Is there a fix for CVE-2026-124450?** Yes: fixed in 8.3.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-124450 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-124450?** Check whether you run OpenEMR at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in 8.3.0

## Technical details

The disposeDocument action in the RingCentral and SignalWire fax/sms clients takes an unvalidated file_path parameter without proper authentication or path containment checks. Authenticated users with only the patients/demo ACL (most clinical and clerical roles) can exploit path traversal to read arbitrary files via file_get_contents() or write arbitrary files via file_put_contents() as the web user. This enables attackers to extract database credentials from sqlconf.php and achieve remote code execution.

## Affected products

- OpenEMR OpenEMR before 8.3.0

## Timeline

- 2026-08-18: disclosed
- 2026-11-08: advisory

## References

- [https://github.com/openemr/openemr/security/advisories/GHSA-wf4w-mx2w-j4vv](https://github.com/openemr/openemr/security/advisories/GHSA-wf4w-mx2w-j4vv)
- [https://www.vulncheck.com/advisories/openemr-before-8.3.0-arbitrary-file-read-write-via-disposedocument](https://www.vulncheck.com/advisories/openemr-before-8.3.0-arbitrary-file-read-write-via-disposedocument)

## Related threats

- [OpenEMR path traversal in oe-module-faxsms disposeDocument](https://junglewise.ai/threats/cve-2026-124490-openemr-before-8-3-0-contains-a-path-traversal-vulnerability-in)
- [OpenEMR broken access control in portal payment processing](https://junglewise.ai/threats/cve-2026-124489-openemr-before-8-3-0-contains-a-broken-access-control)
- [OpenEMR authorization bypass in encounter form loaders](https://junglewise.ai/threats/cve-2026-124488-openemr-before-8-3-0-contains-an-authorization-bypass)
- [OpenEMR improper authorization in FHIR DocumentReference $docref](https://junglewise.ai/threats/cve-2026-124487-openemr-before-8-4-0-contains-an-improper-authorization)
- [OpenEMR missing authorization in classic document controller](https://junglewise.ai/threats/cve-2026-124486-openemr-before-8-3-0-contains-a-missing-authorization)