OpenEMR up to 8.0.0 Fax Sending Endpoint path traversal

Summaryinfo

A vulnerability was found in OpenEMR up to 8.0.0. It has been rated as critical. Affected by this issue is some unknown functionality of the component Fax Sending Endpoint. The manipulation leads to path traversal. This vulnerability is listed as CVE-2026-24488. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in OpenEMR up to 8.0.0. It has been rated as critical. This issue affects an unknown function of the component Fax Sending Endpoint. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality. The summary by CVE is:

OpenEMR is a free and open source electronic health records and medical practice management application. In versions up to and including 8.0.0, an arbitrary file exfiltration vulnerability in the fax sending endpoint allows any authenticated user to read and transmit any file on the server (including database credentials, patient documents, system files, and source code) via fax to an attacker-controlled phone number. The vulnerability exists because the endpoint accepts arbitrary file paths from user input and streams them to the fax gateway without path restrictions or authorization checks. As of time of publication, no known patched versions are available.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-24488 since 01/23/2026. The exploitation is known to be easy. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/05/2026). MITRE ATT&CK project uses the attack technique T1006 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Business Process Management Software

Name

• OpenEMR

Version

• 8.0

License

• open-source

Website

• Product: https://github.com/openemr/openemr/

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