{"id":"CVE-2026-126467","kind":"vulnerability","aliases":["CVE-2026-126467"],"related":[],"title":"OpenEMR: mass assignment lets low-privilege users forge provider-signed observations","description":"OpenEMR before 8.5.0 contains a mass assignment vulnerability in ObservationController::processEnhancedFormSave() that allows authenticated low-privilege users to forge authorization flags through an incomplete field blacklist. Attackers can submit authorized=1 or override the id field alongside observation_id to mark observations as Provider-signed and overwrite clinical fields of other observations within the same patient encounter.","summary":"OpenEMR before 8.5.0 has a mass assignment flaw in its observation save handler, where an incomplete field blacklist lets a logged-in low-privilege user set the authorized flag and overwrite the id. An attacker can mark observations as signed by a provider and alter clinical fields of other observations in the same patient encounter.","severity":"high","cvss":7.1,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"openemr","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["healthcare","openemr","php","runtime","self-hosted"],"not_affected_if":["no-authenticated-low-privilege-users","openemr-8.5.0-or-later"],"how_to_check":"- Check the installed OpenEMR version (`8.5.0` or later is not affected per the NVD description; anything earlier is).\n- Look for ObservationController::processEnhancedFormSave() in the OpenEMR source and confirm whether the field blacklist covers authorized and id.","fix":"- OpenEMR: upgrade to `8.5.0` or later.","status":"open","published_at":"2026-11-13T10:17:55+00:00","first_seen_at":"2026-11-13T10:47:24+00:00","triaged_at":"2026-11-13T10:53:00+00:00","updated_at":"2026-11-13T10:53:00+00:00","category":"runtime","confidence":0.7,"triage":{"at":"2026-11-13T10:53:00Z","model":"claude-haiku-5-5","output":{"fix":"- OpenEMR: upgrade to `8.5.0` or later.","reach":"network","title":"OpenEMR: mass assignment lets low-privilege users forge provider-signed observations","impact":"high","summary":"OpenEMR before 8.5.0 has a mass assignment flaw in its observation save handler, where an incomplete field blacklist lets a logged-in low-privilege user set the authorized flag and overwrite the id. An attacker can mark observations as signed by a provider and alter clinical fields of other observations in the same patient encounter.","audience":"businesses","category":"runtime","nicknames":[],"who_cares":["openemr","self-hosted","healthcare","php"],"confidence":0.7,"fix_status":"available","needs_auth":"yes","worst_case":"attacker forges provider signatures and overwrites other clinical observations","analyst_note":"Confirm the exact affected version range and whether the vendor advisory at github.com names a patch or workaround beyond upgrading to 8.5.0.","how_to_check":"- Check the installed OpenEMR version (`8.5.0` or later is not affected per the NVD description; anything earlier is).\n- Look for ObservationController::processEnhancedFormSave() in the OpenEMR source and confirm whether the field blacklist covers authorized and id.","plain_action":"","product_name":"openemr","needs_analyst":true,"not_affected_if":["openemr-8.5.0-or-later","no-authenticated-low-privilege-users"],"who_is_affected":"Any deployment of OpenEMR before 8.5.0 where users with low-privilege accounts can save observation forms. The risk is to clinical record integrity inside a patient encounter, so healthcare organizations running self-hosted OpenEMR should prioritize it. Installations already on 8.5.0 or later are not affected.","user_interaction":"no","product_ecosystem":"vendor","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000802,"input_tokens":4638,"output_tokens":676,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-126467':16A,19A '-2026':15A,18A '1':116C '8.5.0':30B,87C 'allow':97C 'alongsid':122C 'alter':74B 'assign':3A,34B,91C 'attack':64B,112C 'authent':98C 'author':57B,105C,115C 'blacklist':45B,111C 'clinic':75B,134C 'contain':88C 'cve':14A,17A 'encount':84B,143C 'field':44B,76B,110C,121C,135C 'flag':58B,106C 'flaw':35B 'forg':9A,104C 'handler':40B 'healthcar':21B 'host':27B 'id':62B,120C,124C 'incomplet':43B,109C 'let':4A,46B 'log':49B 'logged-in':48B 'low':6A,52B,100C 'low-privileg':5A,51B,99C 'mark':66B,126C 'mass':2A,33B,90C 'observ':13A,38B,67B,79B,123C,127C,138C 'observationcontrol':94C 'openemr':1A,20A,22B,28B,85C 'overrid':118C 'overwrit':60B,133C 'patient':83B,142C 'php':23B 'privileg':7A,53B,101C 'processenhancedformsav':95C 'provid':11A,72B,130C 'provider-sign':10A,129C 'runtim':24B 'save':39B 'self':26B 'self-host':25B 'set':55B 'sign':12A,69B,131C 'submit':114C 'user':8A,54B,102C 'vulner':92C 'within':139C","nicknames":[],"mitigations":[],"who_affected":"Any deployment of OpenEMR before 8.5.0 where users with low-privilege accounts can save observation forms. The risk is to clinical record integrity inside a patient encounter, so healthcare organizations running self-hosted OpenEMR should prioritize it. Installations 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":["openemr"],"ptokens":["openemr"],"labels":["healthcare","high","openemr","php","runtime","selfhosted","vendor"],"campaign_type":null,"search_a":"'-126467':16A,19A '-2026':15A,18A 'assign':3A 'cve':14A,17A 'forg':9A 'let':4A 'low':6A 'low-privileg':5A 'mass':2A 'observ':13A 'openemr':1A,20A 'privileg':7A 'provid':11A 'provider-sign':10A 'sign':12A 'user':8A","search_b":"'8.5.0':30B 'alter':74B 'assign':34B 'attack':64B 'author':57B 'blacklist':45B 'clinic':75B 'encount':84B 'field':44B,76B 'flag':58B 'flaw':35B 'handler':40B 'healthcar':21B 'host':27B 'id':62B 'incomplet':43B 'let':46B 'log':49B 'logged-in':48B 'low':52B 'low-privileg':51B 'mark':66B 'mass':33B 'observ':38B,67B,79B 'openemr':22B,28B 'overwrit':60B 'patient':83B 'php':23B 'privileg':53B 'provid':72B 'runtim':24B 'save':39B 'self':26B 'self-host':25B 'set':55B 'sign':69B 'user':54B","search_c":"'1':116C '8.5.0':87C 'allow':97C 'alongsid':122C 'assign':91C 'attack':112C 'authent':98C 'author':105C,115C 'blacklist':111C 'clinic':134C 'contain':88C 'encount':143C 'field':110C,121C,135C 'flag':106C 'forg':104C 'id':120C,124C 'incomplet':109C 'low':100C 'low-privileg':99C 'mark':126C 'mass':90C 'observ':123C,127C,138C 'observationcontrol':94C 'openemr':85C 'overrid':118C 'overwrit':133C 'patient':142C 'privileg':101C 'processenhancedformsav':95C 'provid':130C 'provider-sign':129C 'sign':131C 'submit':114C 'user':102C 'vulner':92C 'within':139C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-10-27T22:51:16+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/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-2026-126467","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126467","severity":null,"published_at":"2026-11-13T10:17:55+00:00","modified_at":"2026-11-13T10:17:55+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":145177,"url":"https://github.com/openemr/openemr/security/advisories/GHSA-qv6p-57wj-w55p","title":"Vendor advisory: github.com","kind":"vendor","source":"nvd","publisher":"vendor","text":null,"published_at":"2026-10-27T22:51:16+00:00","relation":"advisory","confidence":null,"note":"Vendor advisory: github.com"},{"id":145178,"url":"https://www.vulncheck.com/advisories/openemr-before-8.5.0-mass-assignment-via-observation-form-save-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"}