Common Weakness Enumeration

CWE-639

Allowed

Authorization Bypass Through User-Controlled Key

Abstraction: Base · Status: Incomplete

API response cwe.mitre.org

The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

2771 vulnerabilities reference this CWE, most recent first.

CVE-2026-124489 (GCVE-0-2026-124489)

Vulnerability from cvelistv5 – Published: 2026-11-08 13:16 – Updated: 2026-11-08 13:16
VLAI
Title
OpenEMR before 8.3.0 Broken Access Control via portal_payment.php
Summary
OpenEMR before 8.3.0 contains a broken access control vulnerability in portal/portal_payment.php that allows low-privilege authenticated users to bypass billing ACL checks by tampering patient identifiers. Attackers can modify the pid and form_pid parameters to view payment pages and record fraudulent payment receipts for arbitrary patients, corrupting billing records.
Severity
7.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
7.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
openemr openemr Affected: 0 , < 8.3.0 (semver)
Unaffected: 8.3.0 (semver)
    cpe:2.3:a:open-emr:openemr:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-08-18 00:00
Credits
Chid0k j3ss1k4 kojiromike
Show details on NVD website
To clipboard 

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CVE-2026-124485 (GCVE-0-2026-124485)

Vulnerability from cvelistv5 – Published: 2026-11-08 13:16 – Updated: 2026-11-08 13:16
VLAI
Title
OpenEMR before 8.3.0 Cross-Patient Document Disclosure via Onsite Documents API
Summary
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 pid_Equals and denialReason_IsNotLike parameters to remove patient scoping and locked filters, exposing consent bodies, signatures, file paths, and template data.
Severity
7.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
openemr openemr Affected: 0 , < 8.3.0 (semver)
Unaffected: 8.3.0 (semver)
    cpe:2.3:a:open-emr:openemr:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-08-18 00:00
Credits
christos-cantina-security
Show details on NVD website
To clipboard 

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CVE-2026-124482 (GCVE-0-2026-124482)

Vulnerability from cvelistv5 – Published: 2026-11-08 13:16 – Updated: 2026-11-08 13:16
VLAI
Title
OpenEMR before 8.4.0 Cross-Patient PHI Exfiltration via SMART Patient Launch
Summary
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.
Severity
7.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
openemr openemr Affected: 0 , < 8.4.0 (semver)
Unaffected: 8.4.0 (semver)
    cpe:2.3:a:open-emr:openemr:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-13 00:00
Show details on NVD website
To clipboard 

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CVE-2026-124481 (GCVE-0-2026-124481)

Vulnerability from cvelistv5 – Published: 2026-11-08 13:16 – Updated: 2026-11-08 13:16
VLAI
Title
OpenEMR before 8.4.0 Cross-Patient Payment Tampering via Rainforest Portal Payments
Summary
OpenEMR before 8.4.0 contains an improper authorization vulnerability in Rainforest patient portal payments that trusts browser-supplied patientId, encounter, and amount values instead of deriving them from the portal session. Authenticated portal patients can tamper with JSON sent to portal_payment.rainforest.php so the payin.authorized webhook writes forged ar_activity credits to other patients' encounters exceeding the amount actually paid.
Severity
7.1 (High)
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
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
openemr openemr Affected: 0 , < 8.4.0 (semver)
Unaffected: 8.4.0 (semver)
    cpe:2.3:a:open-emr:openemr:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-13 00:00
Credits
christos-cantina-security
Show details on NVD website
To clipboard 

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CVE-2026-124476 (GCVE-0-2026-124476)

Vulnerability from cvelistv5 – Published: 2026-11-08 13:15 – Updated: 2026-11-08 13:15
VLAI
Title
OpenEMR before 8.3.0 IDOR via form_pid in portal/lib/paylib.php
Summary
OpenEMR before 8.3.0 contains an insecure direct object reference in portal/lib/paylib.php, which writes the request-supplied form_pid (or the patient_id_cc value in Sphere data) to onsite_portal_activity without checking it against the session patient. Authenticated portal patients can submit portal-save, review-save, AuthorizeNet, Stripe, or Sphere requests to insert or modify forged payment-audit records in other patients' billing records.
Severity
7.1 (High)
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
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
openemr openemr Affected: 0 , < 8.3.0 (semver)
Unaffected: 8.3.0 (semver)
    cpe:2.3:a:open-emr:openemr:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-08-18 00:00
Credits
andrejtomci
Show details on NVD website
To clipboard 

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CVE-2026-124475 (GCVE-0-2026-124475)

Vulnerability from cvelistv5 – Published: 2026-11-08 13:15 – Updated: 2026-11-09 14:21
VLAI
Title
OpenEMR before 8.3.0 IDOR via portal/lib/persist.php setting_patient
Summary
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 setting_patient value. Attackers can insert or overwrite patient_settings rows for victims to suppress notifications, tamper with consent flags, or alter portal preferences.
Severity
7.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
7.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-09 14:21 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
openemr openemr Affected: 0 , < 8.3.0 (semver)
Unaffected: 8.3.0 (semver)
    cpe:2.3:a:open-emr:openemr:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-08-18 00:00
Credits
andrejtomci kojiromike
Show details on NVD website
To clipboard 

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CVE-2026-124473 (GCVE-0-2026-124473)

Vulnerability from cvelistv5 – Published: 2026-11-08 13:15 – Updated: 2026-11-08 13:15
VLAI
Title
OpenEMR before 8.3.0 Broken Object Authorization via SOAP Note Update API
Summary
OpenEMR before 8.3.0 contains a broken object-level authorization vulnerability in the SOAP note update API, which does not verify that the supplied SOAP note ID (sid) belongs to the supplied patient and encounter. Authenticated users with encounters/notes permission can send PUT requests to /api/patient/:pid/encounter/:eid/soap_note/:sid with another patient's sid to overwrite that clinical note and reassign its pid.
Severity
7.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
7.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
openemr openemr Affected: 0 , < 8.3.0 (semver)
Unaffected: 8.3.0 (semver)
    cpe:2.3:a:open-emr:openemr:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-08-18 00:00
Credits
baradika
Show details on NVD website
To clipboard 

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CVE-2026-124471 (GCVE-0-2026-124471)

Vulnerability from cvelistv5 – Published: 2026-11-08 13:15 – Updated: 2026-11-08 13:15
VLAI
Title
OpenEMR before 8.3.0 Missing Authorization and IDOR via sl_eob_invoice.php
Summary
OpenEMR before 8.3.0 contains a missing authorization vulnerability in interface/billing/sl_eob_invoice.php that allows any authenticated user to read and modify billing data for any encounter. Attackers can iterate the id parameter to read patient names and billing notes, and post payments, adjustments, deletions, or billing notes against any patient's account.
Severity
8.6 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
openemr openemr Affected: 0 , < 8.3.0 (semver)
Unaffected: 8.3.0 (semver)
    cpe:2.3:a:open-emr:openemr:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-08-18 00:00
Credits
StarPlatinu
Show details on NVD website
To clipboard 

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CVE-2026-124470 (GCVE-0-2026-124470)

Vulnerability from cvelistv5 – Published: 2026-11-08 13:15 – Updated: 2026-11-09 14:22
VLAI
Title
OpenEMR before 8.3.0 BOLA via portal_custom_report.php Exposes Patient Problem Lists
Summary
OpenEMR before 8.3.0 contains a broken object level authorization vulnerability in portal/report/portal_custom_report.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.
Severity
7.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-09 14:21 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
openemr openemr Affected: 0 , < 8.3.0 (semver)
Unaffected: 8.3.0 (semver)
    cpe:2.3:a:open-emr:openemr:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-08-18 00:00
Credits
weilai-8
Show details on NVD website
To clipboard 

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CVE-2026-124464 (GCVE-0-2026-124464)

Vulnerability from cvelistv5 – Published: 2026-11-08 13:15 – Updated: 2026-11-08 13:15
VLAI
Title
OpenEMR before 8.4.0 FHIR Patient Compartment Bypass via QuestionnaireResponse
Summary
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.
Severity
7.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
openemr openemr Affected: 0 , < 8.4.0 (semver)
Unaffected: 8.4.0 (semver)
    cpe:2.3:a:open-emr:openemr:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-13 00:00
Credits
CyberKareem AquibAquil Tike00
Show details on NVD website
To clipboard 

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Mitigation
Architecture and Design

For each and every data access, ensure that the user has sufficient privilege to access the record that is being requested.

Mitigation
Architecture and Design Implementation

Make sure that the key that is used in the lookup of a specific user's record is not controllable externally by the user or that any tampering can be detected.

Mitigation
Architecture and Design

Use encryption in order to make it more difficult to guess other legitimate values of the key or associate a digital signature with the key so that the server can verify that there has been no tampering.

No CAPEC attack patterns related to this CWE.

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