{"id":"CVE-2026-126487","kind":"vulnerability","aliases":["CVE-2026-126487"],"related":[],"title":"OpenEMR: logged-in users can override global settings, disabling audit logging","description":"OpenEMR before 8.5.0 contains an authorization bypass vulnerability that allows authenticated users to override system-wide global configuration values by storing global-prefixed keys through library/ajax/user_settings.php. Attackers can submit lab or target parameters with global: prefixed setting names to disable audit logging, weaken password policies, or alter security-sensitive settings persistently for their sessions.","summary":"OpenEMR before 8.5.0 lets any authenticated user save keys with a global: prefix through the user settings endpoint, which overrides system-wide configuration. An attacker can turn off audit logging, weaken password policies, or change security settings that persist for their sessions.","severity":"high","cvss":8.8,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"OpenEMR","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["healthcare","openemr","other","php","self-hosted"],"not_affected_if":[],"how_to_check":"- Check the installed OpenEMR version; anything below `8.5.0` is affected.\n- Review the global configuration for audit logging and password policy settings after any user-level changes.","fix":"- OpenEMR: upgrade to `8.5.0` or later.","status":"open","published_at":"2026-11-13T10:17:58+00:00","first_seen_at":"2026-11-13T10:47:26+00:00","triaged_at":"2026-11-13T10:48:51+00:00","updated_at":"2026-11-13T10:48:51+00:00","category":"other","confidence":0.8,"triage":{"at":"2026-11-13T10:48:51Z","model":"claude-haiku-5-5","output":{"fix":"- OpenEMR: upgrade to `8.5.0` or later.","reach":"internet","title":"OpenEMR: logged-in users can override global settings, disabling audit logging","impact":"high","summary":"OpenEMR before 8.5.0 lets any authenticated user save keys with a global: prefix through the user settings endpoint, which overrides system-wide configuration. An attacker can turn off audit logging, weaken password policies, or change security settings that persist for their sessions.","audience":"businesses","category":"other","nicknames":[],"who_cares":["openemr","healthcare","self-hosted","php"],"confidence":0.8,"fix_status":"available","needs_auth":"yes","worst_case":"Attackers disable audit logging and weaken password policies persistently","analyst_note":"","how_to_check":"- Check the installed OpenEMR version; anything below `8.5.0` is affected.\n- Review the global configuration for audit logging and password policy settings after any user-level changes.","plain_action":"","product_name":"OpenEMR","needs_analyst":false,"not_affected_if":[],"who_is_affected":"Any OpenEMR installation before 8.5.0 where users have login accounts is exposed, because the flaw is reached through the normal user settings request. Clinics and hospitals that self-host OpenEMR should check their version; hosted deployments depend on the vendor's patching.","user_interaction":"no","product_ecosystem":"vendor","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.001193,"input_tokens":4624,"output_tokens":1462,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-126487':15A,18A '-2026':14A,17A '8.5.0':29B,72C 'allow':79C 'alter':118C 'attack':52B,98C 'audit':11A,56B,112C 'authent':32B,80C 'author':75C 'bypass':76C 'chang':62B 'configur':50B,88C 'contain':73C 'cve':13A,16A 'disabl':10A,111C 'endpoint':44B 'global':8A,38B,87C,93C,106C 'global-prefix':92C 'healthcar':20B 'host':26B 'key':35B,95C 'lab':101C 'let':30B 'library/ajax/user_settings.php':97C 'log':3A,12A,57B,113C 'logged-in':2A 'name':109C 'openemr':1A,19A,21B,27B,70C 'overrid':7A,46B,83C 'paramet':104C 'password':59B,115C 'persist':66B,123C 'php':23B 'polici':60B,116C 'prefix':39B,94C,107C 'save':34B 'secur':63B,120C 'security-sensit':119C 'self':25B 'self-host':24B 'sensit':121C 'session':69B,126C 'set':9A,43B,64B,108C,122C 'store':91C 'submit':100C 'system':48B,85C 'system-wid':47B,84C 'target':103C 'turn':54B 'user':5A,33B,42B,81C 'valu':89C 'vulner':77C 'weaken':58B,114C 'wide':49B,86C","nicknames":[],"mitigations":[],"who_affected":"Any OpenEMR installation before 8.5.0 where users have login accounts is exposed, because the flaw is reached through the normal user settings request. Clinics and hospitals that self-host OpenEMR should check their version; hosted deployments depend on the vendor's patching.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":["openemr"],"ptokens":["openemr"],"labels":["healthcare","high","openemr","other","php","selfhosted","vendor"],"campaign_type":null,"search_a":"'-126487':15A,18A '-2026':14A,17A 'audit':11A 'cve':13A,16A 'disabl':10A 'global':8A 'log':3A,12A 'logged-in':2A 'openemr':1A,19A 'overrid':7A 'set':9A 'user':5A","search_b":"'8.5.0':29B 'attack':52B 'audit':56B 'authent':32B 'chang':62B 'configur':50B 'endpoint':44B 'global':38B 'healthcar':20B 'host':26B 'key':35B 'let':30B 'log':57B 'openemr':21B,27B 'overrid':46B 'password':59B 'persist':66B 'php':23B 'polici':60B 'prefix':39B 'save':34B 'secur':63B 'self':25B 'self-host':24B 'session':69B 'set':43B,64B 'system':48B 'system-wid':47B 'turn':54B 'user':33B,42B 'weaken':58B 'wide':49B","search_c":"'8.5.0':72C 'allow':79C 'alter':118C 'attack':98C 'audit':112C 'authent':80C 'author':75C 'bypass':76C 'configur':88C 'contain':73C 'disabl':111C 'global':87C,93C,106C 'global-prefix':92C 'key':95C 'lab':101C 'library/ajax/user_settings.php':97C 'log':113C 'name':109C 'openemr':70C 'overrid':83C 'paramet':104C 'password':115C 'persist':123C 'polici':116C 'prefix':94C,107C 'secur':120C 'security-sensit':119C 'sensit':121C 'session':126C 'set':108C,122C 'store':91C 'submit':100C 'system':85C 'system-wid':84C 'target':103C 'user':81C 'valu':89C 'vulner':77C 'weaken':114C 'wide':86C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-10-28T01:47:24+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-2026-126487","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126487","severity":null,"published_at":"2026-11-13T10:17:58+00:00","modified_at":"2026-11-13T10:17:59+00:00","first_seen_at":"2026-11-13T10:47:26+00:00","fetched_at":"2026-11-13T10:47:26+00:00","note":null}],"documents":[{"id":145217,"url":"https://github.com/openemr/openemr/security/advisories/GHSA-v997-jphq-wvvr","title":"Vendor advisory: github.com","kind":"vendor","source":"nvd","publisher":"vendor","text":null,"published_at":"2026-10-28T01:47:24+00:00","relation":"advisory","confidence":null,"note":"Vendor advisory: github.com"},{"id":145218,"url":"https://www.vulncheck.com/advisories/openemr-before-8.5.0-global-configuration-override-via-user-settings-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"}