Insecure Direct Object Reference Vulnerability in OpenEMR Portal
CVE-2026-124453

7.1HIGH

Key Information:

Vendor

Openemr

Status
Openemr
Vendor
CVE Published:
8 November 2026

What is CVE-2026-124453?

An insecure direct object reference vulnerability exists in OpenEMR prior to version 8.3.0, affecting the portal's ability to manage patient settings. Authenticated portal users can exploit this vulnerability by modifying the 'setting_patient' parameter in a JSON POST request, allowing them to alter another patient's settings, which includes changing the portal theme. This flaw can lead to privacy violations and unauthorized access to sensitive patient configurations.

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:
Low
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

lyethar
.