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.

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History

Thu, 12 Nov 2026 01:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Sun, 08 Nov 2026 15:45:00 +0000

Type Values Removed Values Added
First Time appeared Openemr
Openemr openemr
Vendors & Products Openemr
Openemr openemr

Sun, 08 Nov 2026 13:30:00 +0000

Type Values Removed Values Added
Description 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.
Title OpenEMR before 8.3.0 IDOR via OnsitePortalActivityController Update Endpoint
First Time appeared Open-emr
Open-emr openemr
Weaknesses CWE-639
CPEs cpe:2.3:a:open-emr:openemr:*:*:*:*:*:*:*:*
Vendors & Products Open-emr
Open-emr openemr
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'}

cvssV4_0

{'score': 8.6, 'vector': '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'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-10T17:55:49.992Z

Reserved: 2026-11-08T02:14:31.305Z

Link: CVE-2026-124447

cve-icon Vulnrichment

Updated: 2026-11-10T16:26:08.714Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-08T14:18:11.803

Modified: 2026-11-10T21:46:31.443

Link: CVE-2026-124447

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-08T15:30:16Z

Weaknesses