{"id":"CVE-2026-126448","kind":"vulnerability","aliases":["CVE-2026-126448"],"related":[],"title":"OpenEMR: missing access check lets low-privilege users edit shared note templates","description":"OpenEMR before 8.5.0 contains a missing authorization vulnerability that allows authenticated users lacking nationnotes/nn_configure to modify shared Nation Notes templates by calling mutation endpoints directly. Attackers can send requests to ajax_code.php or add_context.php, which lack ACL and CSRF checks, to tamper with clinical-note templates and assignments.","summary":"OpenEMR before 8.5.0 lets authenticated users without the nationnotes/nn_configure permission change shared Nation Notes templates by calling mutation endpoints directly. An attacker can alter clinical-note templates and assignments, since ajax_code.php and add_context.php lack access control and CSRF checks.","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 installed OpenEMR version in the application's version setting; `8.5.0` or later is not affected.\n- Review whether ordinary clinical staff accounts can reach Nation Notes template changes.","fix":"- OpenEMR: move to `8.5.0` or later.","status":"open","published_at":"2026-11-13T10:17:52+00:00","first_seen_at":"2026-11-13T10:47:23+00:00","triaged_at":"2026-11-13T10:57:11+00:00","updated_at":"2026-11-13T10:57:11+00:00","category":"other","confidence":0.7,"triage":{"at":"2026-11-13T10:57:11Z","model":"claude-haiku-5-5","output":{"fix":"- OpenEMR: move to `8.5.0` or later.","reach":"network","title":"OpenEMR: missing access check lets low-privilege users edit shared note templates","impact":"medium","summary":"OpenEMR before 8.5.0 lets authenticated users without the nationnotes/nn_configure permission change shared Nation Notes templates by calling mutation endpoints directly. An attacker can alter clinical-note templates and assignments, since ajax_code.php and add_context.php lack access control and CSRF checks.","audience":"businesses","category":"other","nicknames":[],"who_cares":["openemr","healthcare","self-hosted"],"confidence":0.7,"fix_status":"available","needs_auth":"yes","worst_case":"low-privilege user alters shared clinical-note templates and assignments","analyst_note":"","how_to_check":"- Check the installed OpenEMR version in the application's version setting; `8.5.0` or later is not affected.\n- Review whether ordinary clinical staff accounts can reach Nation Notes template changes.","plain_action":"","product_name":"","needs_analyst":false,"not_affected_if":["openemr-8.5.0-or-later"],"who_is_affected":"Deployments of OpenEMR before 8.5.0 with user accounts that lack the nationnotes/nn_configure permission. The sources do not say whether managed hosting or default configurations differ.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000719,"input_tokens":4623,"output_tokens":513,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-126448':16A,19A '-2026':15A,18A '8.5.0':28B,68C 'access':3A,61B 'acl':101C 'add_context.php':59B,98C 'ajax_code.php':57B,96C 'allow':75C 'alter':49B 'assign':55B,113C 'attack':47B,91C 'authent':30B,76C 'author':72C 'call':42B,87C 'chang':36B 'check':4A,65B,104C 'clinic':51B,109C 'clinical-not':50B,108C 'contain':69C 'control':62B 'csrf':64B,103C 'cve':14A,17A 'direct':45B,90C 'edit':10A 'endpoint':44B,89C 'healthcar':20B 'host':25B 'lack':60B,78C,100C 'let':5A,29B 'low':7A 'low-privileg':6A 'miss':2A,71C 'modifi':81C 'mutat':43B,88C 'nation':38B,83C 'nationnotes/nn_configure':34B,79C 'note':12A,39B,52B,84C,110C 'openemr':1A,21B,26B,66C 'permiss':35B 'privileg':8A 'request':94C 'self':24B 'self-host':23B 'send':93C 'share':11A,37B,82C 'sinc':56B 'tamper':106C 'templat':13A,40B,53B,85C,111C 'user':9A,31B,77C 'vulner':73C 'without':32B","nicknames":[],"mitigations":[],"who_affected":"Deployments of OpenEMR before 8.5.0 with user accounts that lack the nationnotes/nn_configure permission. The sources do not say whether managed hosting or default configurations differ.","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":"'-126448':16A,19A '-2026':15A,18A 'access':3A 'check':4A 'cve':14A,17A 'edit':10A 'let':5A 'low':7A 'low-privileg':6A 'miss':2A 'note':12A 'openemr':1A 'privileg':8A 'share':11A 'templat':13A 'user':9A","search_b":"'8.5.0':28B 'access':61B 'add_context.php':59B 'ajax_code.php':57B 'alter':49B 'assign':55B 'attack':47B 'authent':30B 'call':42B 'chang':36B 'check':65B 'clinic':51B 'clinical-not':50B 'control':62B 'csrf':64B 'direct':45B 'endpoint':44B 'healthcar':20B 'host':25B 'lack':60B 'let':29B 'mutat':43B 'nation':38B 'nationnotes/nn_configure':34B 'note':39B,52B 'openemr':21B,26B 'permiss':35B 'self':24B 'self-host':23B 'share':37B 'sinc':56B 'templat':40B,53B 'user':31B 'without':32B","search_c":"'8.5.0':68C 'acl':101C 'add_context.php':98C 'ajax_code.php':96C 'allow':75C 'assign':113C 'attack':91C 'authent':76C 'author':72C 'call':87C 'check':104C 'clinic':109C 'clinical-not':108C 'contain':69C 'csrf':103C 'direct':90C 'endpoint':89C 'lack':78C,100C 'miss':71C 'modifi':81C 'mutat':88C 'nation':83C 'nationnotes/nn_configure':79C 'note':84C,110C 'openemr':66C 'request':94C 'send':93C 'share':82C 'tamper':106C 'templat':85C,111C 'user':77C 'vulner':73C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-10-28T01:20:51+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-2026-126448","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126448","severity":null,"published_at":"2026-11-13T10:17:52+00:00","modified_at":"2026-11-13T10:17:52+00:00","first_seen_at":"2026-11-13T10:47:23+00:00","fetched_at":"2026-11-13T10:47:23+00:00","note":null}],"documents":[{"id":145140,"url":"https://github.com/openemr/openemr/security/advisories/GHSA-m4cw-vx96-p6fj","title":"Vendor advisory: github.com","kind":"vendor","source":"nvd","publisher":"vendor","text":null,"published_at":"2026-10-28T01:20:51+00:00","relation":"advisory","confidence":null,"note":"Vendor advisory: github.com"},{"id":145141,"url":"https://www.vulncheck.com/advisories/openemr-before-8.5.0-missing-authorization-in-nation-notes-configuration-handlers","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"}