---
id: "CVE-2026-124490"
page: "https://infrastack.ai/live/CVE-2026-124490"
kind: "vulnerability"
aliases: ["CVE-2026-124490"]
title: "OpenEMR: path traversal in fax module lets logged-in users read and write files"
severity: "critical"
cvss: 9.4
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["healthcare", "openemr", "php", "runtime", "self-hosted"]
not_affected_if: ["module-not-installed", "no-fax-integration", "version-8.3.0-or-later"]
published_at: "2026-11-08T14:18:18+00:00"
first_seen_at: "2026-11-08T14:48:41+00:00"
updated_at: "2026-11-08T14:48:51+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-124490", "first_seen_at": "2026-11-08T14:48:41+00:00"}]
exploit_sources: []
---

# OpenEMR: path traversal in fax module lets logged-in users read and write files

Link for people: https://infrastack.ai/live/CVE-2026-124490 (this .md is for agents)

OpenEMR before 8.3.0 has a path traversal flaw in the RingCentral fax client's disposeDocument() method of the oe-module-faxsms module. An authenticated user can read credentials and source code, or write web-executable files that lead to code execution on the server.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the OpenEMR version in the installation; affected versions are those before `8.3.0`.
- Confirm whether the oe-module-faxsms module is installed and enabled.

## Fix

- OpenEMR: move to `8.3.0` or later.

## Timeline

- 2026-11-08T14:48:41+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-124490

## Documents

- [advisory] Vendor advisory: github.com https://github.com/openemr/openemr/security/advisories/GHSA-38jw-pwgq-9hpj
- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/openemr-before-8.3.0-arbitrary-file-read-write-via-oe-module-faxsms-disposedocument

## From the sources

OpenEMR before 8.3.0 contains a path traversal vulnerability in the RingCentral RCFaxClient disposeDocument() method of oe-module-faxsms that allows authenticated attackers to read and write arbitrary files via the file_path parameter. Attackers can use action=download to read credentials and source code, or action=setup with base64 content to write web-executable files for code execution.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_