Dashboard / CVE-2026-124447

CVE-2026-124447

HIGH
MEDIUM Priority: 0.03 BB Relevance: 67/100
Published: 2026-11-08 Modified: 2026-11-10 First seen: 2026-11-08 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
S: X
AT: None
VC: High
VI: High
VA: None

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.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
openemr openemr 0 < 8.3.0
openemr openemr 0 < 8.3.0

References & Advisories (3)

Bug Bounty Relevance

67 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

8.6 / 10.0 v4.0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.29%
Raw Score 0.002940
Percentile 22.3%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00294
2026-11-12
0.00294
2026-11-10
0.00294
2026-11-09
0.00294

Intelligence Sources

mitre ref →
nvd ref →

External Links