Vulnerability details
CVE-2026-102940
OpenEMR: Missing Write ACL Allows Unauthorized Document Reassignment
Official description
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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.6Critical | 3.1 | CVEProject cvelistV5 (CNA) (GitHub_M) | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| openemr | openemr | < 8.4.0 | CVEProject cvelistV5 (CNA) |
References and advisories
4- https://github.com/openemr/openemr/pull/13353 x_refsource_MISC
- https://github.com/openemr/openemr/commit/312b5d042f7fa49cc78ebed041155fba339a991c x_refsource_MISC
- https://github.com/openemr/openemr/releases/tag/v8_3_0 x_refsource_MISC
- https://github.com/openemr/openemr/security/advisories/GHSA-92rh-g949-4mvv x_refsource_CONFIRM
Details
- Published
- 2026-11-05
- Last updated
- 2026-11-06
- State
- Published
- Assigner (CNA)
- GitHub_M
- Kolun priority
- 24 · Low
Exploit prediction (EPSS)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Total
Weaknesses (CWE)
- CWE-639Authorization Bypass Through User-Controlled Key