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-2026-124462 (GCVE-0-2026-124462)

Vulnerability from cvelistv5 – Published: 2026-11-08 13:15 – Updated: 2026-11-08 13:15
VLAI
Title
OpenEMR before 8.3.0 Patient Portal IDOR via Case-Sensitive Pid Parameter
Summary
OpenEMR before 8.3.0 contains an insecure direct object reference vulnerability in OnsiteDocumentController::Query() that allows authenticated portal patients to bypass the lowercase pid authorization guard by supplying a capitalised Pid parameter. Attackers can request the api/onsitedocuments endpoint with Pid set to another patient's id to overwrite the session-pinned criteria and read other patients' onsite documents containing PHI.
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
luuhung1217
Show details on NVD website
To clipboard 

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CVE-2026-124460 (GCVE-0-2026-124460)

Vulnerability from cvelistv5 – Published: 2026-11-08 13:15 – Updated: 2026-11-08 13:15
VLAI
Title
OpenEMR before 8.3.0 IDOR in Patient Portal PortalPatientController
Summary
OpenEMR before 8.3.0 contains an insecure direct object reference vulnerability in PortalPatientController::Read() that allows authenticated patients to read other patients' pending demographic change requests. Attackers can supply another patient's ID in the patientId query string parameter to retrieve PHI including names, addresses, SSNs, and insurance information.
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
Firehed
Show details on NVD website
To clipboard 

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CVE-2026-124459 (GCVE-0-2026-124459)

Vulnerability from cvelistv5 – Published: 2026-11-08 13:15 – Updated: 2026-11-08 13:15
VLAI
Title
OpenEMR before 8.3.0 Cross-Patient IDOR via Encounter Form Viewers and Save Handlers
Summary
OpenEMR before 8.3.0 contains an insecure direct object reference vulnerability in many encounter-form view and save endpoints that lack patient/encounter ownership checks. Authenticated clinical users can enumerate sequential form id values in requests such as soap/view.php and save.php to read and overwrite other patients' clinical records.
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
CyberKareem arpitjain099
Show details on NVD website
To clipboard 

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CVE-2026-124455 (GCVE-0-2026-124455)

Vulnerability from cvelistv5 – Published: 2026-11-08 13:15 – Updated: 2026-11-08 13:15
VLAI
Title
OpenEMR before 8.3.0 IDOR via Portal OnsiteDocument Pid_Equals Mass-Assignment
Summary
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 Pid_Equals criteria. Attackers can supply Pid_Equals, Pid_GreaterThan, or Pid_In request parameters to the onsitedocuments API to retrieve signed consent forms, signatures, and PHI of any patient.
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
CyberKareem L0stHeart
Show details on NVD website
To clipboard 

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CVE-2026-124453 (GCVE-0-2026-124453)

Vulnerability from cvelistv5 – Published: 2026-11-08 13:15 – Updated: 2026-11-08 13:15
VLAI
Title
OpenEMR before 8.3.0 IDOR in Portal Patient Settings via persist.php
Summary
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 setting_patient parameter in a JSON POST request to another patient's PID, altering that patient's portal settings such as the portal theme.
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
lyethar
Show details on NVD website
To clipboard 

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CVE-2026-124451 (GCVE-0-2026-124451)

Vulnerability from cvelistv5 – Published: 2026-11-08 13:15 – Updated: 2026-11-08 13:15
VLAI
Title
OpenEMR before 8.4.0 Authorization Bypass via checkUserHasAccessToPatient in SMART on FHIR
Summary
OpenEMR before 8.4.0 contains an authorization bypass vulnerability in its SMART on FHIR implementation because checkUserHasAccessToPatient() in BearerTokenAuthorizationStrategy.php unconditionally returns true. Authenticated users or malicious SMART apps can manipulate token launch context to bind requests to arbitrary patient UUIDs, gaining unauthorized read/write access to other patients' FHIR resources.
Severity
6 (Medium)
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
5.3 (Medium)
CVSS:3.1/AV:N/AC:H/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
MKLKCDG
Show details on NVD website
To clipboard 

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CVE-2026-124449 (GCVE-0-2026-124449)

Vulnerability from cvelistv5 – Published: 2026-11-08 13:15 – Updated: 2026-11-08 13:15
VLAI
Title
OpenEMR before 8.4.0 Missing Authorization via FHIR Media and QuestionnaireResponse Routes
Summary
OpenEMR before 8.4.0 contains a missing authorization vulnerability in FHIR Media/:uuid and QuestionnaireResponse read routes that skip ACL checks. Non-patient API tokens lacking OpenEMR ACLs can request resources by uuid, bypassing compartment filtering to read any patient's documents and questionnaire responses.
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
arpitjain099 AquibAquil Tike00
Show details on NVD website
To clipboard 

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CVE-2026-124447 (GCVE-0-2026-124447)

Vulnerability from cvelistv5 – Published: 2026-11-08 13:15 – Updated: 2026-11-08 13:15
VLAI
Title
OpenEMR before 8.3.0 IDOR via OnsitePortalActivityController Update Endpoint
Summary
OpenEMR before 8.3.0 contains an insecure direct object reference vulnerability in OnsitePortalActivityController::Update() that checks the request's patientId instead of the stored record's owner. Authenticated portal patients can send PUT requests to the onsiteportalactivity API with another patient's activity id and their own patientId to disclose tableArgs and checksum data, overwrite narratives and status, and take ownership of the record.
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
Alpastx MKLKCDG
Show details on NVD website
To clipboard 

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CVE-2026-124025 (GCVE-0-2026-124025)

Vulnerability from cvelistv5 – Published: 2026-11-06 19:14 – Updated: 2026-11-06 19:14
VLAI
Title
Faveo Helpdesk through 2.0.3 Cross-Department Ticket Disclosure via /ticket/print
Summary
Faveo Helpdesk through 2.0.3 contains a broken access control vulnerability in TicketController::ticket_print and the pdfThread endpoint that fails to verify ticket department or assignment. Authenticated agents can request arbitrary ticket ids via GET /ticket/print/{id} to render PDFs of other departments' tickets, including full conversation threads.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
faveosuite faveo-helpdesk Affected: 0 , ≤ 2.0.3 (custom)
    cpe:2.3:a:ladybirdweb:faveo_helpdesk:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-22 00:00
Credits
hieuPenguinnn Sandesh Menath
Show details on NVD website
To clipboard 

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CVE-2026-123861 (GCVE-0-2026-123861)

Vulnerability from cvelistv5 – Published: 2026-11-07 12:43 – Updated: 2026-11-07 18:26 X_Open Source
VLAI
Title
WordPress JetFormBuilder – Hierarchical Select plugin <= 1.0.10 - Insecure Direct Object References (IDOR) vulnerability
Summary
Authorization Bypass Through User-Controlled Key vulnerability in CrocoBlock JetFormBuilder – Hierarchical Select jet-form-builder-hierarchical-select allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects JetFormBuilder – Hierarchical Select: from n/a through 1.0.10.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-07 18:09 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Date Public
2026-11-07 12:43
Credits
Nikiforos Bafas | Patchstack Bug Bounty Program
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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