OpenEMR is a free and open source electronic health records and medical practice management application. From 6.0.0 until 8.3.0, interface/globals.php uses the unauthenticated authUser login parameter to populate tempauthuserid and load that account's usersettings before authentication succeeds. Existing usernames can therefore cause an additional database query and may apply visible customized settings, while nonexistent usernames skip that behavior. A remote unauthenticated actor can use timing or page differences to enumerate valid accounts for later credential attacks. This issue is fixed in version 8.3.0.

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.3.0, the smssearch branch of interface/main/messages/save.php requires an authenticated session but does not enforce patient or feature-level ACLs. A low-privilege user who cannot access patient data through the normal interface can search the MedEx SMS endpoint and receive patient identifiers, names, phone numbers, SMS permission status, and recent message information. This issue is fixed in version 8.3.0.

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.3.0, the searchpersons action in library/ajax/personsearchajax.php validates CSRF but does not perform an AclMain authorization check before searching the person and patientdata tables. A low-privilege authenticated user can iterate name prefixes and receive patient first and last names, dates of birth, gender, phone numbers, and email addresses in JSON responses. This issue is fixed in version 8.3.0.

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.3.0, interface/forms/transfersummary/new.php and interface/forms/functionalcognitivestatus/new.php render stored transferto, code, and codetext values with text(), which uses ENTNOQUOTES, inside double-quoted HTML value attributes. An authenticated clinical user can store a value containing a double quote that escapes the attribute and injects event-handler markup when another clinician opens the form. Successful exploitation can expose session data and protected health information or permit patient-record actions in the victim's session. This issue is fixed in version 8.3.0.

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.3.0, the webroot admin.php multisite administration page is enabled without an authentication check, reads database configuration from sqlconf.php, and connects to each configured site database. An unauthenticated network actor can obtain site identifiers, database names, site names, exact OpenEMR versions and patch levels, pending upgrade status, and direct login and patient-portal links. This issue is fixed in version 8.3.0.

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.3.0, custom/ajaxdownload.php, custom/downloadqrda.php, custom/exportqrdaxml.php, and custom/qrdadownload.php validate CSRF but do not enforce the patients/med ACL used by the canonical CQM report page. The endpoints also accept an unscoped reportid, allowing a low-privilege authenticated user to reach report generation and download logic for other reports. In a clinic with generated CQM reports, this can expose QRDA Category One and Category Three clinical documents for patients in a measure. This issue is fixed in version 8.3.0.

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.3.0, interface/patientfile/poscheckoutippf.php performs state-changing void, voidall, and regen operations through GET requests without CSRF token validation. The formchecksum integrity check is conditional and is skipped when the parameter is omitted, allowing a cross-site request to force an authenticated billing user to void checkouts or regenerate invoice counters. The resulting changes can alter ledger state, financial reporting, and audit records. This issue is fixed in version 8.3.0.

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.3.0, library/ajax/setpt.php allows any authenticated user to set an arbitrary patient identifier in the active session without an ACL check, and interface/patientfile/downloadtemplate.php trusts that session value while enforcing only CSRF validation. A low-privilege user can select another patient and download a rendered document template containing the patient's demographics, encounter information, allergies, medications, and problem list despite lacking patients/docs access. This issue is fixed in version 8.3.0.

OpenEMR before 8.4.0 contains an improper authorization vulnerability in the non-patient POST /fhir/DocumentReference/$docref route that allows low-privileged users to generate any patient's CCDA. Attackers with only demographics and documents permissions can supply a victim patient parameter, then download the full-chart CCDA from Patient Documents to exfiltrate clinical data.

OpenEMR before 8.4.0 contains an arbitrary local file read vulnerability in REST document download, where the controller passes stored uploaded document bytes to Symfony's BinaryFileResponse as a filesystem path instead of returning them as content. Authenticated users with document upload and download access can upload a document containing an absolute pathname, such as the sqlconf.php location, then download it to read server files and recover database credentials.

OpenEMR before 8.4.0 contains an incorrect authorization vulnerability because the prescription REST API routes check the patients.med ACL instead of patients.rx and request no specific permission bit, so read-only Medical/History access passes the check. Authenticated staff users can reuse the UI-exposed APICSRFTOKEN to enumerate prescription UUIDs, forge prescriptions for arbitrary patients, and deactivate existing prescriptions tenant-wide.

OpenEMR before 8.3.0 contains an insecure direct object reference vulnerability in portal/lib/persist.php that allows authenticated portal patients to modify other patients' settings by supplying an arbitrary settingpatient value. Attackers can insert or overwrite patientsettings rows for victims to suppress notifications, tamper with consent flags, or alter portal preferences.

OpenEMR before 8.4.0 contains a server-side request forgery vulnerability that allows unauthenticated attackers to make the server send HTTP requests by registering an OAuth2 client with an unvalidated jwksuri. Attackers can trigger the fetch via the token introspection endpoint with an unsigned clientassertion to probe internal services and reach cloud metadata endpoints.

OpenEMR before 8.3.0 contains a missing authorization vulnerability in library/ajax/upload.php that allows any authenticated user to read and overwrite document data by supplying an arbitrary docid. Low-privilege users can enumerate docid values with the fetch and save actions to disclose patient health information and tamper with medical records across all patients.

OpenEMR before 8.3.0 contains a stored cross-site scripting vulnerability in the CCDA/CCD preview stylesheets, where cda.xsl copies event-handler attributes whose values evade a character denylist and ccd.xsl copies table-cell attributes unsanitized into preview HTML. Authenticated users can upload a crafted CCDA/CCD document with onmouseover, onclick, or onfocus handlers to execute script in a clinician's session when previewed.

OpenEMR before 8.3.0 contains a path traversal vulnerability in interface/billing/sleobprocess.php that allows authenticated users to write and read files by supplying unsanitized eraname values. Attackers without billing privileges can inject ../ sequences to create ERA report .html files anywhere the web user can write and parse arbitrary .edi files echoed into the report.

OpenEMR before 8.3.0 contains a broken object level authorization vulnerability in portal/report/portalcustomreport.php that allows authenticated portal patients to read other patients' problem list entries. Attackers can enumerate sequential IDs in issue parameter names to retrieve other patients' problem titles, clinical notes, ICD diagnosis codes, and IPPF contraceptive records.

OpenEMR before 8.3.0 contains a stored cross-site scripting vulnerability in interface/forms/eyemag/report.php that allows authenticated users to inject scripts by adding unescaped document notes. Attackers with document-note write access can store malicious JavaScript in a retina document note that executes when clinicians generate the Eye Exam patient report, exposing session cookies.

OpenEMR before 8.4.0 contains a mass assignment vulnerability in the patient portal OnsiteDocument query API that lets request parameters set bitwise criteria filters whose values are placed unquoted into the SQL WHERE clause. Authenticated patient portal users can inject SQL via parameters such as IdBitwiseAnd to read any database table, including other patients' records and staff password hashes.

OpenEMR before 8.3.0 contains an insecure direct object reference vulnerability in portal/lib/persist.php that allows authenticated portal patients to write settings for other patients. Attackers can modify the settingpatient parameter in a JSON POST request to another patient's PID, altering that patient's portal settings such as the portal theme.

OpenEMR before 8.4.0 contains an authorization bypass vulnerability that allows patient-scoped SMART tokens to read other patients' questionnaire responses because FhirQuestionnaireResponseService does not implement IPatientCompartmentResourceService. Attackers holding a patient/QuestionnaireResponse.rs token can request responses by uuid or list the unfiltered bundle to obtain cross-patient clinical assessment answers.

OpenEMR before 8.3.0 contains a missing authorization vulnerability in the classic document controller that allows low-privilege authenticated users to recategorize other patients' documents. Attackers can invoke moveactionprocess to move a document into a patients|demo category, then retrieve it with an empty patientid to exfiltrate PHI and tamper with charts.

OpenEMR before 8.3.0 contains a missing authorization vulnerability in the addRecall action of /interface/main/messages/save.php that allows low-privileged authenticated users to modify arbitrary patients' recall data. Attackers can submit a crafted newpid with recall, contact, provider, facility, and notification preference fields to overwrite records of patients they cannot access.

OpenEMR before 8.4.0 contains an authorization bypass allowing low-privileged SMART standalone-launch users to bind arbitrary patient UUIDs into the OAuth token context. Attackers with only the patients|demo ACL can select a victim during authorization and read that patient's clinical notes and documents through patient-scoped DocumentReference and Binary FHIR endpoints.

OpenEMR before 8.3.0 contains a path traversal vulnerability in the FaxSMS module's RCFaxClient and SignalWireClient disposeDocument functions that allows authenticated low-privilege users to read and overwrite arbitrary files via the unsanitized filepath parameter. Attackers can request action=download to retrieve cleartext files like sqlconf.php database credentials and keys, or use action=setup to overwrite web-server-writable files with ciphertext.

OpenEMR before 8.3.0 contains an authorization bypass vulnerability in the patient portal onsitedocuments API that allows authenticated patients to read other patients' documents by overriding query criteria. Attackers can send empty pidEquals and denialReasonIsNotLike parameters to remove patient scoping and locked filters, exposing consent bodies, signatures, file paths, and template data.

OpenEMR before 8.3.0 contains an SQL injection vulnerability in the Fee Sheet drug-inventory lookup (DrugSalesService::sellDrug) that interpolates the prod[N][warehouse] POST field into an ORDER BY clause. Low-privileged authenticated users can submit Fee Sheet product lines with constant subqueries to run a time-based blind oracle, extracting patient data and userssecure bcrypt hashes.

OpenEMR before 8.3.0 contains a stored cross-site scripting vulnerability that allows authenticated users with CAMOS access to inject HTML by saving malicious CAMOS content through ajaxsave.php. Attackers can store a script payload that executes unencoded when the entry is printed via the non-printhtml branch of rxprint.php, performing actions and reading data as the victim user.

OpenEMR before 8.3.0 contains a missing authorization vulnerability in interface/billing/sleobpatientnote.php that allows any authenticated user to read and modify patient billing notes. Attackers with low-privilege accounts can enumerate the patientid parameter and submit POST requests using the embedded CSRF token to view or tamper with confidential billing data.

OpenEMR before 8.3.0 contains an insecure direct object reference vulnerability in OnsiteDocumentController::Query() that allows authenticated portal patients to read other patients' documents by overriding PidEquals criteria. Attackers can supply PidEquals, PidGreaterThan, or PidIn request parameters to the onsitedocuments API to retrieve signed consent forms, signatures, and PHI of any patient.