Insecure Direct Object Reference in OpenEMR Affects Sensitive Patient Data
CVE-2026-124455

7.1HIGH

Key Information:

Vendor

Openemr

Status
Openemr
Vendor
CVE Published:
8 November 2026

What is CVE-2026-124455?

The OpenEMR platform prior to version 8.3.0 contains a critical vulnerability stemming from insecure direct object reference in the OnsiteDocumentController::Query() function. This flaw permits authenticated portal patients to manipulate request parameters such as Pid_Equals, Pid_GreaterThan, or Pid_In, thereby enabling them to access signed consent forms, signatures, and personal health information (PHI) belonging to other patients. The risk of unauthorized data exposure necessitates prompt action from users to safeguard sensitive information.

Affected Version(s)

openemr 0 < 8.3.0

openemr 8.3.0

References

https://github.com/openemr/openemr/security/advisories/GH...
vendor-advisory
https://www.vulncheck.com/advisories/openemr-before-8.3.0...
third-party-advisory

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

CyberKareem
L0stHeart
.