{"id":"CVE-2026-126438","kind":"vulnerability","aliases":["CVE-2026-126438"],"related":[],"title":"OpenEMR: read-only users can alter clinical-rule records of other patients","description":"OpenEMR before 8.5.0 contains an improper authorization vulnerability in interface/patient_file/rules/patient_data.php that allows read-only patients/med users to modify clinical-rule records. Attackers can submit a global form_entryID row ID to overwrite completion date, state, and result, including records of patients outside their configured squad.","summary":"OpenEMR before 8.5.0 has an authorization flaw in its patient data rules handler, letting read-only patient or medical users overwrite clinical-rule records. An attacker can submit a global record ID to change completion date, state, and result, including for patients outside their assigned squad.","severity":"medium","cvss":5.3,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["healthcare","openemr","other","self-hosted"],"not_affected_if":["openemr-8.5.0-or-later"],"how_to_check":"- Check the OpenEMR version in use; versions below `8.5.0` are listed as affected.\n- Review `interface/patient_file/rules/patient_data.php` in the deployed code for the authorization check.","fix":"- OpenEMR `8.5.0` (fixed version named in the affected range).","status":"open","published_at":"2026-11-13T10:17:50+00:00","first_seen_at":"2026-11-13T10:47:22+00:00","triaged_at":"2026-11-13T10:57:14+00:00","updated_at":"2026-11-13T10:57:14+00:00","category":"other","confidence":0.7,"triage":{"at":"2026-11-13T10:57:14Z","model":"claude-haiku-5-5","output":{"fix":"- OpenEMR `8.5.0` (fixed version named in the affected range).","reach":"network","title":"OpenEMR: read-only users can alter clinical-rule records of other patients","impact":"medium","summary":"OpenEMR before 8.5.0 has an authorization flaw in its patient data rules handler, letting read-only patient or medical users overwrite clinical-rule records. An attacker can submit a global record ID to change completion date, state, and result, including for patients outside their assigned squad.","audience":"businesses","category":"other","nicknames":[],"who_cares":["openemr","self-hosted","healthcare"],"confidence":0.7,"fix_status":"available","needs_auth":"yes","worst_case":"clinical records of other patients altered by a low-privilege user","analyst_note":"Confirm the fixed version and patch details at the vendor advisory linked on github.com; the sources do not state how to check exposure beyond version.","how_to_check":"- Check the OpenEMR version in use; versions below `8.5.0` are listed as affected.\n- Review `interface/patient_file/rules/patient_data.php` in the deployed code for the authorization check.","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["openemr-8.5.0-or-later"],"who_is_affected":"Clinics and hospitals running self-hosted OpenEMR before 8.5.0 where staff have read-only or medical roles with patient squad assignments. Installations on 8.5.0 or later are not affected by this flaw.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000738,"input_tokens":4595,"output_tokens":557,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-126438':17A,20A '-2026':16A,19A '8.5.0':29B,77C 'allow':86C 'alter':7A 'assign':73B 'attack':54B,98C 'author':32B,81C 'chang':62B 'clinic':9A,50B,95C 'clinical-rul':8A,49B,94C 'complet':63B,109C 'configur':120C 'contain':78C 'cve':15A,18A 'data':37B 'date':64B,110C 'entryid':104C 'flaw':33B 'form':103C 'global':58B,102C 'handler':39B 'healthcar':21B 'host':26B 'id':60B,106C 'improp':80C 'includ':68B,114C 'interface/patient_file/rules/patient_data.php':84C 'let':40B 'medic':46B 'modifi':93C 'openemr':1A,22B,27B,75C 'outsid':71B,118C 'overwrit':48B,108C 'patient':14A,36B,44B,70B,117C 'patients/med':90C 'read':3A,42B,88C 'read-on':2A,41B,87C 'record':11A,52B,59B,97C,115C 'result':67B,113C 'row':105C 'rule':10A,38B,51B,96C 'self':25B 'self-host':24B 'squad':74B,121C 'state':65B,111C 'submit':56B,100C 'user':5A,47B,91C 'vulner':82C","nicknames":[],"mitigations":[],"who_affected":"Clinics and hospitals running self-hosted OpenEMR before 8.5.0 where staff have read-only or medical roles with patient squad assignments. Installations on 8.5.0 or later are not affected by this flaw.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["healthcare","medium","openemr","other","selfhosted"],"campaign_type":null,"search_a":"'-126438':17A,20A '-2026':16A,19A 'alter':7A 'clinic':9A 'clinical-rul':8A 'cve':15A,18A 'openemr':1A 'patient':14A 'read':3A 'read-on':2A 'record':11A 'rule':10A 'user':5A","search_b":"'8.5.0':29B 'assign':73B 'attack':54B 'author':32B 'chang':62B 'clinic':50B 'clinical-rul':49B 'complet':63B 'data':37B 'date':64B 'flaw':33B 'global':58B 'handler':39B 'healthcar':21B 'host':26B 'id':60B 'includ':68B 'let':40B 'medic':46B 'openemr':22B,27B 'outsid':71B 'overwrit':48B 'patient':36B,44B,70B 'read':42B 'read-on':41B 'record':52B,59B 'result':67B 'rule':38B,51B 'self':25B 'self-host':24B 'squad':74B 'state':65B 'submit':56B 'user':47B","search_c":"'8.5.0':77C 'allow':86C 'attack':98C 'author':81C 'clinic':95C 'clinical-rul':94C 'complet':109C 'configur':120C 'contain':78C 'date':110C 'entryid':104C 'form':103C 'global':102C 'id':106C 'improp':80C 'includ':114C 'interface/patient_file/rules/patient_data.php':84C 'modifi':93C 'openemr':75C 'outsid':118C 'overwrit':108C 'patient':117C 'patients/med':90C 'read':88C 'read-on':87C 'record':97C,115C 'result':113C 'row':105C 'rule':96C 'squad':121C 'state':111C 'submit':100C 'user':91C 'vulner':82C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-10-28T01:48:53+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/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-2026-126438","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126438","severity":null,"published_at":"2026-11-13T10:17:50+00:00","modified_at":"2026-11-13T10:17:50+00:00","first_seen_at":"2026-11-13T10:47:22+00:00","fetched_at":"2026-11-13T10:47:22+00:00","note":null}],"documents":[{"id":145120,"url":"https://github.com/openemr/openemr/security/advisories/GHSA-xqq3-59h5-xhmr","title":"Vendor advisory: github.com","kind":"vendor","source":"nvd","publisher":"vendor","text":null,"published_at":"2026-10-28T01:48:53+00:00","relation":"advisory","confidence":null,"note":"Vendor advisory: github.com"},{"id":145121,"url":"https://www.vulncheck.com/advisories/openemr-before-8.5.0-improper-authorization-in-clinical-rule-editor-patient-data-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"}