CVE-2026-49142

The application OpenEMR versions 5.0.0, 5.0.1-dev and prior is affected by a vertical privilege escalation vulnerability. This vulnerability allows authenticated non-administrator users to view and modify information only accessible to administrators.

OpenEMR versions before 5.0.0 Patch 5 allow unauthenticated remote database copying because setup.php exposes functionality for cloning an existing OpenEMR site to an arbitrary attacker-controlled MySQL server via vectors involving a crafted state parameter.

OpenEMR version 5.0.0 and prior allows low-privilege users to upload files of dangerous types, which can lead to arbitrary code execution within the context of the vulnerable application.

OpenEMR through 8.2.0 contains a remote code execution vulnerability in the document category tree component (library/classes/Tree.class.php) that allows authenticated administrators to execute arbitrary operating system commands by injecting PHP payloads into the categories database table. Attackers can chain arbitrary SQL execution to alter the id column type to VARCHAR and insert a malicious PHP payload, which is then executed via an unsanitized eval() call whenever any page instantiates CategoryTree, including unauthenticated and low-privilege pages, resulting in command execution as the web server user.

OpenEMR before version 8.3.0 contains a path traversal vulnerability in the EDI archive restore function. The archrestore_sel parameter is passed without sanitization, and differing response messages leak whether the target path exists. An authenticated user with EOB Data Entry permissions can probe arbitrary filesystem paths.

OpenEMR before 8.3.0 contains a cross-site request forgery vulnerability in the DICOM viewer. The web_path GET parameter is embedded as a URL without validation against expected path formats. An attacker can craft a URL that causes an authenticated user with Patients - Documents permissions to make authenticated requests to arbitrary OpenEMR endpoints, enabling forced logout and other state-changing actions.

OpenEMR before 8.3.0 contains a stored cross-site scripting vulnerability in the patient portal template import handler. Authenticated attackers with Forms Administration permissions can upload template files containing arbitrary HTML or JavaScript. Malicious scripts are stored without sanitization and execute in the browser of any other Forms Administration user who views the template in the HTML editor.

OpenEMR before 8.3.0 contains a reflected cross-site scripting vulnerability in the patient portal template import handler. The templateHtml GET parameter is reflected into the page response without sanitization. An attacker can craft a URL that executes arbitrary JavaScript in the browser of any authenticated user with Forms Administration permissions who visits the link, enabling session hijacking.

OpenEMR before 8.2.0 contains a path traversal vulnerability in the standard_tables_manage.php interface where the db GET parameter is passed without validation to temp_dir_cleanup(), which joins the value to the PHP temporary directory path and recursively deletes the resulting directory. Attackers can supply a traversal sequence in the db parameter to resolve outside the intended temporary directory, and by chaining this with an open redirect in dicom_frame.php, an unauthenticated attacker can deliver a crafted URL that triggers arbitrary recursive directory deletion within an authenticated Superuser's session.

OpenEMR through 8.2.0 contains a stored XSS vulnerability in the patient portal template system. Authenticated administrators can inject arbitrary HTML and JavaScript by storing malicious payloads through the template save mode, which only filters literal PHP open tags. Lack of output encoding at the template retrieval endpoint and missing HttpOnly cookie attributes allow session token exfiltration via document.cookie.