{"id":"CVE-2026-126461","kind":"vulnerability","aliases":["CVE-2026-126461"],"related":[],"title":"OpenEMR: any logged-in user can override global service settings","description":"OpenEMR before 8.5.0 contains a missing authorization vulnerability in library/ajax/user_settings.php that lets any authenticated user persist arbitrary global configuration overrides. Attackers can POST global:-prefixed keys to re-point external service hosts like CouchDB, eRx, phiMail, or SMTP to attacker-controlled servers, exfiltrating system credentials and patient PHI.","summary":"OpenEMR before 8.5.0 lets any authenticated user save arbitrary global configuration overrides through user_settings.php. An attacker can point service hosts such as CouchDB, eRx, phiMail, or SMTP at servers they control, capturing system credentials and patient health information.","severity":"high","cvss":7.1,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["healthcare","openemr","package","php","self-hosted"],"not_affected_if":["openemr-8.5.0-or-later"],"how_to_check":"- Check the installed OpenEMR version; `8.5.0` or later is not affected.\n- Review `library/ajax/user_settings.php` for missing authorization checks on global settings.","fix":"- OpenEMR: upgrade to `8.5.0` or later.","status":"open","published_at":"2026-11-13T10:17:54+00:00","first_seen_at":"2026-11-13T10:47:24+00:00","triaged_at":"2026-11-13T10:53:03+00:00","updated_at":"2026-11-13T10:53:03+00:00","category":"package","confidence":0.7,"triage":{"at":"2026-11-13T10:53:03Z","model":"claude-haiku-5-5","output":{"fix":"- OpenEMR: upgrade to `8.5.0` or later.","reach":"network","title":"OpenEMR: any logged-in user can override global service settings","impact":"high","summary":"OpenEMR before 8.5.0 lets any authenticated user save arbitrary global configuration overrides through user_settings.php. An attacker can point service hosts such as CouchDB, eRx, phiMail, or SMTP at servers they control, capturing system credentials and patient health information.","audience":"businesses","category":"package","nicknames":[],"who_cares":["openemr","self-hosted","healthcare","php"],"confidence":0.7,"fix_status":"available","needs_auth":"yes","worst_case":"Attacker redirects services and steals credentials and patient records","analyst_note":"Check the vendor advisory on github.com and the VulnCheck page for affected version range and any workaround before 8.5.0.","how_to_check":"- Check the installed OpenEMR version; `8.5.0` or later is not affected.\n- Review `library/ajax/user_settings.php` for missing authorization checks on global settings.","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["openemr-8.5.0-or-later"],"who_is_affected":"Any OpenEMR deployment before 8.5.0 where users have logins, since any authenticated account can reach the vulnerable endpoint. Clinics and hospitals running self-hosted OpenEMR should prioritize this because patient records and service credentials are exposed. Instances already on 8.5.0 or later are not affected.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000756,"input_tokens":4637,"output_tokens":584,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-126461':14A,17A '-2026':13A,16A '8.5.0':27B,65C 'arbitrari':33B,79C 'attack':40B,83C,104C 'attacker-control':103C 'authent':30B,76C 'author':69C 'captur':56B 'configur':35B,81C 'contain':66C 'control':55B,105C 'couchdb':47B,97C 'credenti':58B,109C 'cve':12A,15A 'erx':48B,98C 'exfiltr':107C 'extern':93C 'global':9A,34B,80C,86C 'health':61B 'healthcar':18B 'host':24B,44B,95C 'inform':62B 'key':88C 'let':28B,74C 'library/ajax/user_settings.php':72C 'like':96C 'log':4A 'logged-in':3A 'miss':68C 'openemr':1A,19B,25B,63C 'overrid':8A,36B,82C 'packag':20B 'patient':60B,111C 'persist':78C 'phi':112C 'phimail':49B,99C 'php':21B 'point':42B,92C 'post':85C 'prefix':87C 're':91C 're-point':90C 'save':32B 'self':23B 'self-host':22B 'server':53B,106C 'servic':10A,43B,94C 'set':11A 'smtp':51B,101C 'system':57B,108C 'user':6A,31B,77C 'user_settings.php':38B 'vulner':70C","nicknames":[],"mitigations":[],"who_affected":"Any OpenEMR deployment before 8.5.0 where users have logins, since any authenticated account can reach the vulnerable endpoint. Clinics and hospitals running self-hosted OpenEMR should prioritize this because patient records and service credentials are exposed. Instances already on 8.5.0 or later are not affected.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["healthcare","high","openemr","package","php","selfhosted"],"campaign_type":null,"search_a":"'-126461':14A,17A '-2026':13A,16A 'cve':12A,15A 'global':9A 'log':4A 'logged-in':3A 'openemr':1A 'overrid':8A 'servic':10A 'set':11A 'user':6A","search_b":"'8.5.0':27B 'arbitrari':33B 'attack':40B 'authent':30B 'captur':56B 'configur':35B 'control':55B 'couchdb':47B 'credenti':58B 'erx':48B 'global':34B 'health':61B 'healthcar':18B 'host':24B,44B 'inform':62B 'let':28B 'openemr':19B,25B 'overrid':36B 'packag':20B 'patient':60B 'phimail':49B 'php':21B 'point':42B 'save':32B 'self':23B 'self-host':22B 'server':53B 'servic':43B 'smtp':51B 'system':57B 'user':31B 'user_settings.php':38B","search_c":"'8.5.0':65C 'arbitrari':79C 'attack':83C,104C 'attacker-control':103C 'authent':76C 'author':69C 'configur':81C 'contain':66C 'control':105C 'couchdb':97C 'credenti':109C 'erx':98C 'exfiltr':107C 'extern':93C 'global':80C,86C 'host':95C 'key':88C 'let':74C 'library/ajax/user_settings.php':72C 'like':96C 'miss':68C 'openemr':63C 'overrid':82C 'patient':111C 'persist':78C 'phi':112C 'phimail':99C 'point':92C 'post':85C 'prefix':87C 're':91C 're-point':90C 'server':106C 'servic':94C 'smtp':101C 'system':108C 'user':77C 'vulner':70C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-10-28T01:47:45+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/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-2026-126461","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126461","severity":null,"published_at":"2026-11-13T10:17:54+00:00","modified_at":"2026-11-13T10:17:54+00:00","first_seen_at":"2026-11-13T10:47:24+00:00","fetched_at":"2026-11-13T10:47:24+00:00","note":null}],"documents":[{"id":145165,"url":"https://github.com/openemr/openemr/security/advisories/GHSA-prmv-3m3j-9v7j","title":"Vendor advisory: github.com","kind":"vendor","source":"nvd","publisher":"vendor","text":null,"published_at":"2026-10-28T01:47:45+00:00","relation":"advisory","confidence":null,"note":"Vendor advisory: github.com"},{"id":145166,"url":"https://www.vulncheck.com/advisories/openemr-before-8.5.0-missing-authorization-via-user-settings-php-global-override","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"}