CVE-2026-126418

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 54/100
Published: 2026-11-13 Modified: 2026-11-13 First seen: 2026-11-13 Status: active

Attack Surface

Network Low Complexity Conf. Impact

CVSS Vector Breakdown

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

Description

OpenEMR before 8.5.0 contains a stored cross-site scripting vulnerability in interface/billing/sl_eob_invoice.php, which escapes billing codes for HTML attributes but not for JavaScript strings in an inline onkeyup handler. Clinicians with encounter coding access can save crafted billing codes through diagnosis.php that execute script when a Back Office user enters a payment, exposing patient and financial data or performing actions as that user.

Affected Software (1)

VendorProductVersion
openemr openemr 0 < 8.5.0

Bug Bounty Relevance

54 / 100
✓ Network accessible
✓ Low complexity

CVSS Score

6.9 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:L/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

0.21%
Raw Score 0.002120
Percentile 11.5%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00212
2026-11-13
0.00296

Intelligence Sources

mitre ref →
nvd ref →