OpenEMR up to 8.3.x Document Reassignment C_Document.class.php Document::change_patient improper authorization

Summaryinfo

A vulnerability was found in OpenEMR up to 8.3.x and classified as critical. This issue affects the function Document::change_patient of the file controllers/C_Document.class.php of the component Document Reassignment. Such manipulation leads to improper authorization. This vulnerability is documented as CVE-2026-102940. The attack can be executed remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in OpenEMR up to 8.3.x. It has been rated as critical. Affected by this issue is the function Document::change_patient of the file controllers/C_Document.class.php of the component Document Reassignment. The manipulation with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality, integrity, and availability. CVE summarizes:

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.4.0, controllers/C_Document.class.php write actions, including move_action_process(), do not verify the caller's access to the source document, current patient and category, or destination patient and category before Document::change_patient() performs the mutation. A low-privilege authenticated user can reassign an arbitrary document to a patient or category the user can access and then retrieve it through the normally protected read path. The reassignment occurs before a later list rendering check, so a final HTTP 403 response does not mean the unauthorized write was blocked. This issue is fixed in version 8.4.0.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-102940 since 09/29/2026. The exploitation is known to be easy. The attack may be launched remotely. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1548.002 by the MITRE ATT&CK project.

By approaching the search of inurl:controllers/C_Document.class.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 8.4.0 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Business Process Management Software

Name

• OpenEMR

Version

• 8.0
• 8.1
• 8.2
• 8.3

License

• open-source

Website

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

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion