{"id":"CVE-2026-124489","kind":"vulnerability","aliases":["CVE-2026-124489"],"related":[],"title":"OpenEMR: billing ACL bypass lets logged-in users record fake patient payments","description":"OpenEMR before 8.3.0 contains a broken access control vulnerability in portal/portal_payment.php that allows low-privilege authenticated users to bypass billing ACL checks by tampering patient identifiers. Attackers can modify the pid and form_pid parameters to view payment pages and record fraudulent payment receipts for arbitrary patients, corrupting billing records.","summary":"OpenEMR, an electronic health records system, has a broken access control flaw in its patient portal payment page. A low-privilege logged-in user can change the patient ID parameters to view payment pages and record fraudulent payments for any patient, corrupting billing records.","severity":"high","cvss":7.1,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"OpenEMR","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["billing","healthcare","openemr","other","self-hosted"],"not_affected_if":["no-portal-users","openemr-8.3.0-or-later"],"how_to_check":"- Check the OpenEMR version in the admin panel or footer; versions before `8.3.0` are affected.\n- Review whether `portal/portal_payment.php` is reachable by portal or low-privilege accounts.","fix":"- OpenEMR versions before `8.3.0`: move to `8.3.0` or later.","status":"open","published_at":"2026-11-08T14:18:18+00:00","first_seen_at":"2026-11-08T14:48:41+00:00","triaged_at":"2026-11-08T14:49:24+00:00","updated_at":"2026-11-08T14:49:24+00:00","category":"other","confidence":0.7,"triage":{"at":"2026-11-08T14:49:24Z","model":"claude-haiku-5-5","output":{"fix":"- OpenEMR versions before `8.3.0`: move to `8.3.0` or later.","reach":"network","title":"OpenEMR: billing ACL bypass lets logged-in users record fake patient payments","impact":"medium","summary":"OpenEMR, an electronic health records system, has a broken access control flaw in its patient portal payment page. A low-privilege logged-in user can change the patient ID parameters to view payment pages and record fraudulent payments for any patient, corrupting billing records.","audience":"businesses","category":"other","nicknames":[],"who_cares":["openemr","self-hosted","healthcare","billing"],"confidence":0.7,"fix_status":"available","needs_auth":"yes","worst_case":"fraudulent payment records created for arbitrary patients, corrupting billing data","analyst_note":"","how_to_check":"- Check the OpenEMR version in the admin panel or footer; versions before `8.3.0` are affected.\n- Review whether `portal/portal_payment.php` is reachable by portal or low-privilege accounts.","plain_action":"","product_name":"OpenEMR","needs_analyst":false,"not_affected_if":["openemr-8.3.0-or-later","no-portal-users"],"who_is_affected":"Clinics and organisations running self-hosted OpenEMR below 8.3.0 where patient portal users or low-privilege accounts can log in. Installs with no portal or only trusted staff accounts are less exposed.","user_interaction":"no","product_ecosystem":"vendor","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000738,"input_tokens":4620,"output_tokens":552,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-124489':16A,19A '-2026':15A,18A '8.3.0':76C 'access':37B,80C 'acl':3A,95C 'allow':86C 'arbitrari':120C 'attack':101C 'authent':90C 'bill':2A,21B,72B,94C,123C 'broken':36B,79C 'bypass':4A,93C 'chang':55B 'check':96C 'contain':77C 'control':38B,81C 'corrupt':71B,122C 'cve':14A,17A 'electron':30B 'fake':11A 'flaw':39B 'form':107C 'fraudul':66B,116C 'health':31B 'healthcar':22B 'host':27B 'id':58B 'identifi':100C 'let':5A 'log':7A,51B 'logged-in':6A,50B 'low':48B,88C 'low-privileg':47B,87C 'modifi':103C 'openemr':1A,20A,23B,28B,74C 'page':45B,63B,113C 'paramet':59B,109C 'patient':12A,42B,57B,70B,99C,121C 'payment':13A,44B,62B,67B,112C,117C 'pid':105C,108C 'portal':43B 'portal/portal_payment.php':84C 'privileg':49B,89C 'receipt':118C 'record':10A,32B,65B,73B,115C,124C 'self':26B 'self-host':25B 'system':33B 'tamper':98C 'user':9A,53B,91C 'view':61B,111C 'vulner':82C","nicknames":[],"mitigations":[],"who_affected":"Clinics and organisations running self-hosted OpenEMR below 8.3.0 where patient portal users or low-privilege accounts can log in. Installs with no portal or only trusted staff accounts are less exposed.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":["openemr"],"ptokens":["openemr"],"labels":["billing","healthcare","high","openemr","other","selfhosted","vendor"],"campaign_type":null,"search_a":"'-124489':16A,19A '-2026':15A,18A 'acl':3A 'bill':2A 'bypass':4A 'cve':14A,17A 'fake':11A 'let':5A 'log':7A 'logged-in':6A 'openemr':1A,20A 'patient':12A 'payment':13A 'record':10A 'user':9A","search_b":"'access':37B 'bill':21B,72B 'broken':36B 'chang':55B 'control':38B 'corrupt':71B 'electron':30B 'flaw':39B 'fraudul':66B 'health':31B 'healthcar':22B 'host':27B 'id':58B 'log':51B 'logged-in':50B 'low':48B 'low-privileg':47B 'openemr':23B,28B 'page':45B,63B 'paramet':59B 'patient':42B,57B,70B 'payment':44B,62B,67B 'portal':43B 'privileg':49B 'record':32B,65B,73B 'self':26B 'self-host':25B 'system':33B 'user':53B 'view':61B","search_c":"'8.3.0':76C 'access':80C 'acl':95C 'allow':86C 'arbitrari':120C 'attack':101C 'authent':90C 'bill':94C,123C 'broken':79C 'bypass':93C 'check':96C 'contain':77C 'control':81C 'corrupt':122C 'form':107C 'fraudul':116C 'identifi':100C 'low':88C 'low-privileg':87C 'modifi':103C 'openemr':74C 'page':113C 'paramet':109C 'patient':99C,121C 'payment':112C,117C 'pid':105C,108C 'portal/portal_payment.php':84C 'privileg':89C 'receipt':118C 'record':115C,124C 'tamper':98C 'user':91C 'view':111C 'vulner':82C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-08-18T09:11:03+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/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-2026-124489","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-124489","severity":null,"published_at":"2026-11-08T14:18:18+00:00","modified_at":"2026-11-08T14:18:18+00:00","first_seen_at":"2026-11-08T14:48:41+00:00","fetched_at":"2026-11-08T14:48:41+00:00","note":null}],"documents":[{"id":102166,"url":"https://github.com/openemr/openemr/security/advisories/GHSA-j2cx-3p5q-ppx5","title":"Vendor advisory: github.com","kind":"vendor","source":"nvd","publisher":"vendor","text":null,"published_at":"2026-08-18T09:11:03+00:00","relation":"advisory","confidence":null,"note":"Vendor advisory: github.com"},{"id":102167,"url":"https://www.vulncheck.com/advisories/openemr-before-8.3.0-broken-access-control-via-portal-payment-php","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"}