CVE-2026-126424

OpenEMR before 8.5.0 Stored XSS via Billing Code Descriptions

  • Medium 4.6

Description

OpenEMR before 8.5.0 contains a stored cross-site scripting vulnerability that allows users with admin/superbill write permission to inject HTML into SNOMED code descriptions via superbill_custom_full.php. When a clinician selects the malicious code, the Functional and Cognitive Status form or fee-sheet forms assign it to innerHTML, executing JavaScript in the clinician's session to read patient data and perform actions.

Key facts

Published
13 Nov 2026
Last changed
13 Nov 2026
Assigned by
VulnCheck
EPSS
0.253% likely to be exploited in the next 30 days, higher than 16.914% of CVEs (scores for 15 Nov 2026)
SSVC (CISA)
Exploitation: poc; Automatable: no; Technical impact: partial

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

  • 4.6CVSS 4.0, Mediumfrom the CNA (VulnCheck)CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
  • 3.5CVSS 3.1, Lowfrom the CNA (VulnCheck)CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

No explicit remediation statement is available on this page yet. Consult the original record and vendor references before choosing a fix.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

VendorProductVersions
openemropenemr
  • Default status: unaffected
  • 0 up to but excluding 8.5.0 (affected)
  • 8.5.0 (unaffected)

Timeline

  1. 13 Nov 2026 Published

Weakness

Practice this bug class

HackZoneLabs has a hands-on lab on XSS (stored, reflected, DOM) (CWE-79).

References