{"id":"CVE-2026-124467","kind":"vulnerability","aliases":["CVE-2026-124467"],"related":[],"title":"OpenEMR: authenticated upload and file inclusion lets attackers run code","description":"OpenEMR before 8.4.0 contains a local file inclusion in the ESign router (library/ESign/Router.php), which passes the unsanitized module parameter into a require_once of '<module>/Controller.php', and the fax module's faxProcessUploads writes attacker-named files to a predictable temp path without extension checks. Authenticated attackers can upload a PHP file named Controller.php, then request interface/esign/index.php with a traversing module parameter to include it and execute arbitrary code.","summary":"OpenEMR before 8.4.0 passes an unsanitized module parameter into a require_once in its ESign router, so an attacker can include a file they uploaded. Because the fax upload path writes attacker-named files without extension checks, an authenticated user can upload a PHP file and execute arbitrary code on the server.","severity":"high","cvss":8.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["healthcare","openemr","other","php","self-hosted"],"not_affected_if":["no-authenticated-users","openemr-8.4.0-or-later"],"how_to_check":"- Check the installed OpenEMR version against the fixed release in the product ranges (unknown in the sources)\n- Look for an `interface/esign/index.php` route and `library/ESign/Router.php` in the install","fix":"- OpenEMR: move to `8.4.0` or later (per the NVD description: before 8.4.0 is affected)","status":"open","published_at":"2026-11-08T14:18:14+00:00","first_seen_at":"2026-11-08T14:48:40+00:00","triaged_at":"2026-11-08T14:49:01+00:00","updated_at":"2026-11-08T14:49:01+00:00","category":"other","confidence":0.7,"triage":{"at":"2026-11-08T14:49:01Z","model":"claude-haiku-5-5","output":{"fix":"- OpenEMR: move to `8.4.0` or later (per the NVD description: before 8.4.0 is affected)","reach":"internet","title":"OpenEMR: authenticated upload and file inclusion lets attackers run code","impact":"high","summary":"OpenEMR before 8.4.0 passes an unsanitized module parameter into a require_once in its ESign router, so an attacker can include a file they uploaded. Because the fax upload path writes attacker-named files without extension checks, an authenticated user can upload a PHP file and execute arbitrary code on the server.","audience":"businesses","category":"other","nicknames":[],"who_cares":["openemr","php","healthcare","self-hosted"],"confidence":0.7,"fix_status":"available","needs_auth":"yes","worst_case":"Attacker runs arbitrary PHP code on the OpenEMR server","analyst_note":"Confirm whether the ESign and fax modules are enabled by default and check the vendor advisory on github.com for the exact fix and any workaround.","how_to_check":"- Check the installed OpenEMR version against the fixed release in the product ranges (unknown in the sources)\n- Look for an `interface/esign/index.php` route and `library/ESign/Router.php` in the install\n- unknown for anything beyond version and file presence","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["openemr-8.4.0-or-later","no-authenticated-users"],"who_is_affected":"OpenEMR installations older than 8.4.0 that are reachable by users with a login, since the flaw requires an authenticated account to upload and trigger the included file. Hospitals, clinics and other health-care operators running self-hosted OpenEMR are the exposed group; hosted deployments depend on the vendor's patch timing.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000791,"input_tokens":4662,"output_tokens":649,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-124467':13A,16A '-2026':12A,15A '/controller.php':101C '8.4.0':26B,79C 'arbitrari':72B,143C 'attack':8A,42B,56B,110C,122C 'attacker-nam':55B,109C 'authent':2A,63B,121C 'check':61B,120C 'code':10A,73B,144C 'contain':80C 'controller.php':129C 'cve':11A,14A 'esign':38B,87C 'execut':71B,142C 'extens':60B,119C 'fax':51B,104C 'faxprocessupload':107C 'file':5A,46B,58B,69B,83C,112C,127C 'healthcar':17B 'host':23B 'includ':44B,139C 'inclus':6A,84C 'interface/esign/index.php':132C 'let':7A 'library/esign/router.php':89C 'local':82C 'modul':30B,94C,105C,136C 'name':57B,111C,128C 'openemr':1A,18B,24B,77C 'paramet':31B,95C,137C 'pass':27B,91C 'path':53B,117C 'php':20B,68B,126C 'predict':115C 'request':131C 'requir':34B,98C 'router':39B,88C 'run':9A 'self':22B 'self-host':21B 'server':76B 'temp':116C 'travers':135C 'unsanit':29B,93C 'upload':3A,48B,52B,66B,124C 'user':64B 'without':59B,118C 'write':54B,108C","nicknames":[],"mitigations":[],"who_affected":"OpenEMR installations older than 8.4.0 that are reachable by users with a login, since the flaw requires an authenticated account to upload and trigger the included file. Hospitals, clinics and other health-care operators running self-hosted OpenEMR are the exposed group; hosted deployments depend on the vendor's patch timing.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["healthcare","high","openemr","other","php","selfhosted"],"campaign_type":null,"search_a":"'-124467':13A,16A '-2026':12A,15A 'attack':8A 'authent':2A 'code':10A 'cve':11A,14A 'file':5A 'inclus':6A 'let':7A 'openemr':1A 'run':9A 'upload':3A","search_b":"'8.4.0':26B 'arbitrari':72B 'attack':42B,56B 'attacker-nam':55B 'authent':63B 'check':61B 'code':73B 'esign':38B 'execut':71B 'extens':60B 'fax':51B 'file':46B,58B,69B 'healthcar':17B 'host':23B 'includ':44B 'modul':30B 'name':57B 'openemr':18B,24B 'paramet':31B 'pass':27B 'path':53B 'php':20B,68B 'requir':34B 'router':39B 'self':22B 'self-host':21B 'server':76B 'unsanit':29B 'upload':48B,52B,66B 'user':64B 'without':59B 'write':54B","search_c":"'/controller.php':101C '8.4.0':79C 'arbitrari':143C 'attack':110C,122C 'attacker-nam':109C 'authent':121C 'check':120C 'code':144C 'contain':80C 'controller.php':129C 'esign':87C 'execut':142C 'extens':119C 'fax':104C 'faxprocessupload':107C 'file':83C,112C,127C 'includ':139C 'inclus':84C 'interface/esign/index.php':132C 'library/esign/router.php':89C 'local':82C 'modul':94C,105C,136C 'name':111C,128C 'openemr':77C 'paramet':95C,137C 'pass':91C 'path':117C 'php':126C 'predict':115C 'request':131C 'requir':98C 'router':88C 'temp':116C 'travers':135C 'unsanit':93C 'upload':124C 'without':118C 'write':108C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-09-13T09:42:18+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","cvss_by":"disclosure@vulncheck.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-124467","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-124467","severity":null,"published_at":"2026-11-08T14:18:14+00:00","modified_at":"2026-11-08T14:18:14+00:00","first_seen_at":"2026-11-08T14:48:40+00:00","fetched_at":"2026-11-08T14:48:40+00:00","note":null}],"documents":[{"id":102119,"url":"https://github.com/openemr/openemr/security/advisories/GHSA-p4v7-crwp-qq7q","title":"Vendor advisory: github.com","kind":"vendor","source":"nvd","publisher":"vendor","text":null,"published_at":"2026-09-13T09:42:18+00:00","relation":"advisory","confidence":null,"note":"Vendor advisory: github.com"},{"id":102120,"url":"https://www.vulncheck.com/advisories/openemr-before-8.4.0-remote-code-execution-via-esign-lfi-and-fax-upload","title":"Third-party advisory: www.vulncheck.com","kind":"advisory","source":"nvd","publisher":"research","text":null,"published_at":null,"relation":"advisory","confidence":null,"note":"Third-party advisory: www.vulncheck.com"}],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}