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CVE-2026-126450

OpenEMR before 8.5.0 Stored XSS via Patient External ID in Prescriptions

OpenEMR before 8.5.0 contains a stored cross-site scripting vulnerability that allows authenticated users to inject scripts by placing payloads in the patient External ID field. The payload executes when other users open the patient's prescriptions via View Printable Version (HTML), running script in their browser sessions.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Open-emr Openemr
Products
Openemr Openemr
CVE-2026-126449

OpenEMR before 8.5.0 Missing Authorization in immunizations.php, diagnosis_full.php, billing_process.php

OpenEMR before 8.5.0 contains a missing authorization vulnerability in immunizations.php, diagnosis_full.php, and billing_process.php that lets low-privileged users bypass ACL checks. Authenticated Front Office users can reuse their session CSRF token to add or delete immunizations, write encounter billing codes, and invoke the billing processor.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Open-emr Openemr
Products
Openemr Openemr
CVE-2026-126445

OpenEMR before 8.5.0 Missing Authorization in Patient Flow Board Tracker Endpoints

OpenEMR before 8.5.0 contains a missing authorization vulnerability that allows any authenticated core user to modify arbitrary Patient Flow Board trackers without the patients/appt permission. Attackers can submit a victim tracker_id to patient_tracker_status.php or drug_screen_completed.php to falsify check-in status, rooms, drug-screen completion, and tracker history.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Open-emr Openemr
Products
Openemr Openemr
CVE-2026-126427

OpenEMR before 8.5.0 Idle Session Timeout Bypass via Eye Exam Form

OpenEMR before 8.5.0 contains a session expiration vulnerability that prevents automatic logoff because the Eye Exam form's read-only poll omits skip_timeout_reset. Attackers with physical access to an unattended workstation can use the still-active session to view patient health information, since update_READONLY() resets the idle timer every 15 seconds.

CVSS 4.0 · 4.3 Medium EPSS < 1% KEV · Not listed
Vendors
Open-emr Openemr
Products
Openemr Openemr
CVE-2026-126424

OpenEMR before 8.5.0 Stored XSS via Billing Code Descriptions

OpenEMR before 8.5.0 contains a stored cross-site scripting vulnerability that allows users with admin/superbill write permission to inject HTML into SNOMED code descriptions via superbill_custom_full.php. When a clinician selects the malicious code, the Functional and Cognitive Status form or fee-sheet forms assign it to innerHTML, executing JavaScript in the clinician's session to read patient data and perform actions.

CVSS 4.0 · 4.6 Medium EPSS < 1% KEV · Not listed
Vendors
Open-emr Openemr
Products
Openemr Openemr
CVE-2026-126423

OpenEMR before 8.5.0 Denial of Service via ZIP Upload Decompression

OpenEMR before 8.5.0 contains a denial of service vulnerability in four ZIP upload paths that read uncompressed entries into memory without size or ratio checks. Authenticated billing or Carecoordination users can upload highly compressed ZIP archives to exhaust PHP memory and worker pools, making OpenEMR unavailable.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Open-emr Openemr
Products
Openemr Openemr
CVE-2026-126443

OpenEMR before 8.5.0 Missing Authorization via dynamic_finder_ajax.php Patient Finder

OpenEMR before 8.5.0 contains a missing authorization vulnerability in dynamic_finder_ajax.php that allows authenticated users without patients/demo permission to query patient demographics. Attackers can supply arbitrary patient_data columns via the sColumns parameter to enumerate names, dates of birth, contact details, and Social Security numbers across the practice.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Open-emr Openemr
Products
Openemr Openemr
CVE-2026-126441

OpenEMR before 8.5.0 IDOR via CAMOS rx_print.php Prescription Disclosure

OpenEMR before 8.5.0 contains an insecure direct object reference vulnerability in the CAMOS rx_print.php printer that allows authenticated users to read other patients' prescriptions. Attackers can submit forged chrx_ parameters with global prescription IDs to disclose drug names, dosages, directions, and refill counts without medication permissions.

CVSS 4.0 · 6 Medium EPSS < 1% KEV · Not listed
Vendors
Open-emr Openemr
Products
Openemr Openemr
CVE-2026-126439

OpenEMR before 8.5.0 Authorization Bypass via C-CDA Gateway ccda_gateway.php

OpenEMR before 8.5.0 contains a missing authorization vulnerability in ccdaservice/ccda_gateway.php that fails to enforce the patients/pat_rep permission, accepting any authenticated core session. Authenticated users without patient-report permission can request the report_ccd_view action to retrieve the selected patient's C-CDA clinical summary, including diagnoses, medications, laboratory results, and identifiers.

CVSS 4.0 · 6 Medium EPSS < 1% KEV · Not listed
Vendors
Open-emr Openemr
Products
Openemr Openemr
CVE-2026-126437

OpenEMR before 8.5.0 Authorization Bypass via portal/lib/download_template.php

OpenEMR before 8.5.0 contains an authorization bypass vulnerability in portal/lib/download_template.php that allows any authenticated core user to render documents for arbitrary patients by setting isModule. Attackers can submit arbitrary pid and template_id values to disclose patient names, birth dates, chart IDs, addresses, allergies, medications, and problem lists despite ACL and squad restrictions.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Open-emr Openemr
Products
Openemr Openemr
CVE-2026-126436

OpenEMR before 8.5.0 OAuth2 Grant Type Enforcement Bypass via Token Endpoint

OpenEMR before 8.5.0 contains an authorization bypass vulnerability that allows OAuth2 clients to use unregistered grant types because oauth_clients.grant_types is never enforced. Attackers can request tokens with grant_type=password to bypass the user consent screen, and disabled clients can redeem authorization codes using JWT client assertions.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
Open-emr Openemr
Products
Openemr Openemr
CVE-2026-126432

OpenEMR before 8.5.0 Improper Authorization in Lab Order Transmission via list_reports.php

OpenEMR before 8.5.0 contains an improper authorization vulnerability in interface/orders/list_reports.php that allows read-only users to transmit lab orders because the patients/med check ignores write permission. Authenticated attackers can submit form_xmit with arbitrary procedure order IDs to send HL7 orders containing SSNs, insurance, and diagnoses to laboratories and mark them transmitted.

CVSS 4.0 · 6 Medium EPSS < 1% KEV · Not listed
Vendors
Open-emr Openemr
Products
Openemr Openemr
CVE-2026-126431

OpenEMR before 8.5.0 Second-Order SQL Injection via Carecoordination CCDA Mapper

OpenEMR before 8.5.0 contains a second-order sql injection vulnerability that allows authenticated Carecoordination users to store malicious C-CDA field identifiers through the savedata action. Attackers can inject SQL into the IN clause built by fetchFormValues() during C-CDA generation to extract password hashes, portal reset values, and patient records.

CVSS 4.0 · 7.6 High EPSS < 1% KEV · Not listed
Vendors
Open-emr Openemr
Products
Openemr Openemr
CVE-2026-126428

OpenEMR before 8.5.0 RCE via Stored ERA Upload and Background Services

OpenEMR before 8.5.0 contains a remote code execution vulnerability that allows authenticated billing users to store attacker-controlled PHP by uploading a malformed ERA file to era_payments.php. Attackers with a database-write primitive such as SQL injection can register a background_services row whose require_once loads the stored .edi file, executing PHP as the web-server user.

CVSS 4.0 · 7.7 High EPSS < 1% KEV · Not listed
Vendors
Open-emr Openemr
Products
Openemr Openemr
CVE-2026-126426

OpenEMR 5.0.2 before 8.5.0 Missing Re-Authentication for MFA Factor Deletion and U2F Registration

OpenEMR 5.0.2 before 8.5.0 contains a missing authentication vulnerability in mfa_registrations.php and mfa_u2f.php that allows session hijackers to delete MFA factors or register U2F keys without password re-entry. Attackers holding a victim's authenticated session can remove all second factors or add their own U2F key, bypassing MFA at later logins with the password.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Open-emr Openemr
Products
Openemr Openemr
CVE-2026-126425

OpenEMR before 8.5.0 Stored SQL Injection via History Layout Field Identifiers

OpenEMR before 8.5.0 contains a stored SQL injection vulnerability in which History layout field identifiers saved through edit_layout.php, including HIS fields and LBF source-H fields, are placed unvalidated into an INSERT statement for patients without a history_data row. Users with admin/super and patients/med write access can trigger history_save.php or LBF saves to execute SQL functions like SLEEP, tying up database workers or accessing data beyond their privileges.

CVSS 4.0 · 4.6 Medium EPSS < 1% KEV · Not listed
Vendors
Open-emr Openemr
Products
Openemr Openemr
CVE-2026-126422

OpenEMR before 8.5.0 Missing Authorization via lists_touch.php

OpenEMR before 8.5.0 contains a missing authorization vulnerability in library/ajax/lists_touch.php that allows restricted authenticated users to mark another patient's clinical lists as reviewed. Attackers can submit arbitrary patient_id and type values to falsely record "None known" allergy, medication, or problem lists, misleading clinicians and skewing quality-measure calculations.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Open-emr Openemr
Products
Openemr Openemr
CVE-2026-126421

OpenEMR before 8.5.0 Denial of Service via labs_ajax.php Label Count

OpenEMR before 8.5.0 contains an uncontrolled resource consumption vulnerability that allows authenticated users with patients/med access to exhaust PHP workers via an unbounded count parameter. Attackers can send print_labels requests to labs_ajax.php with huge counts, forcing mPDF page and barcode generation that makes OpenEMR unavailable.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Open-emr Openemr
Products
Openemr Openemr
CVE-2026-126420

OpenEMR before 8.5.0 Missing Authorization in FaxSMS utility.php Patient Creation

OpenEMR before 8.5.0 contains a missing authorization vulnerability in the FaxSMS module's utility.php that allows read-only demographics users to create patient charts. Attackers can submit the form_create request with chosen identity fields to create fictitious or duplicate patients with employer, history, and insurance records.

CVSS 4.0 · 6 Medium EPSS < 1% KEV · Not listed
Vendors
Open-emr Openemr
Products
Openemr Openemr
CVE-2026-126419

OpenEMR before 8.5.0 Missing Authorization in E-Sign Form Submission

OpenEMR before 8.5.0 contains a missing authorization vulnerability in the esign_form_submit handler of library/ESign/Form/Controller.php that verifies only the caller's password, not access to the patient, encounter, or form type. Authenticated core users can supply arbitrary formId, formDir, and encounterId values to sign and lock any patient's clinical form, creating unauthorized approval records and blocking normal editing.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Open-emr Openemr
Products
Openemr Openemr