---
id: "CVE-2026-103939"
kind: "vulnerability"
aliases: ["CVE-2026-103939"]
title: "OpenEMR: Weno module lets any user empty the pharmacy directory"
severity: "medium"
cvss: 5.4
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["healthcare", "openemr", "php", "runtime", "self-hosted"]
not_affected_if: ["openemr-8.3.0-or-later", "weno-module-disabled"]
published_at: "2026-11-05T20:17:38+00:00"
first_seen_at: "2026-11-05T20:40:43+00:00"
updated_at: "2026-11-05T20:43:27+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-103939", "first_seen_at": "2026-11-05T20:40:43+00:00"}]
exploit_sources: []
---

# OpenEMR: Weno module lets any user empty the pharmacy directory

OpenEMR's Weno e-prescribing module has a download script with no access check or CSRF protection, so any logged-in user, or a cross-site request triggered through a logged-in victim, can delete the weno_pharmacy table. A failed re-download can leave the pharmacy directory empty and e-prescribing unavailable.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the OpenEMR version in the application's version settings or `composer.json`; versions below `8.3.0` are affected.
- Confirm the Weno module is enabled under the module manager (`interface/modules/custom_modules/oe-module-weno` exists).

## Fix

- OpenEMR: upgrade to `8.3.0` or later.

## Timeline

- 2026-11-05T20:40:43+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-103939

## Documents

- [advisory] Vendor advisory: github.com https://github.com/openemr/openemr/security/advisories/GHSA-xhv3-qr55-56h3
- [fix] Patch: github.com https://github.com/openemr/openemr/commit/f760adc7bddaf9d118e1a0d40590e686783ed21b
- [fix] Release notes: github.com https://github.com/openemr/openemr/releases/tag/v8_3_0

## From the sources

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.3.0, interface/modules/custom_modules/oe-module-weno/scripts/file_download.php has no ACL or CSRF check and ignores the result of validateAdminCredentials(). When the Weno module is enabled, the default GET path calls PharmacyService::removeWenoPharmacies() before attempting a refetch, allowing any authenticated user to truncate the weno_pharmacy table and allowing a cross-site request to trigger the same operation through a logged-in victim. A failed later download can leave the e-prescribing pharmacy directory empty and unavailable. This issue is fixed in version 8.3.0.

---

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