---
id: "CVE-2026-126456"
page: "https://infrastack.ai/live/CVE-2026-126456"
kind: "vulnerability"
aliases: ["CVE-2026-126456"]
title: "OpenEMR: stored XSS in Fee Sheet notecodes runs in other users' browsers"
severity: "medium"
cvss: 5.4
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["healthcare", "openemr", "other", "self-hosted"]
not_affected_if: ["no-untrusted-clinician-accounts", "openemr-8.5.0-or-later"]
published_at: "2026-11-13T10:17:53+00:00"
first_seen_at: "2026-11-13T10:47:24+00:00"
updated_at: "2026-11-13T10:56:55+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-126456", "first_seen_at": "2026-11-13T10:47:24+00:00"}]
exploit_sources: []
---

# OpenEMR: stored XSS in Fee Sheet notecodes runs in other users' browsers

Link for people: https://infrastack.ai/live/CVE-2026-126456 (this .md is for agents)

OpenEMR before 8.5.0 escapes the Fee Sheet notecodes field in the wrong context, so stored input can break out of an HTML attribute. A clinician can plant a script that runs in the browsers of higher-privileged users.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the OpenEMR version in the installation; versions before `8.5.0` are affected according to the sources.
- Confirm whether untrusted users hold clinician accounts that can edit Fee Sheet notecodes.

## Fix

- OpenEMR: move to `8.5.0` or later, per the sources.

## Timeline

- 2026-11-13T10:47:24+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-126456

## Documents

- [advisory] Vendor advisory: github.com https://github.com/openemr/openemr/security/advisories/GHSA-ff55-qvf9-2fgm
- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/openemr-before-8.5.0-stored-xss-via-fee-sheet-notecodes-field

## From the sources

OpenEMR before 8.5.0 contains a stored cross-site scripting vulnerability in the Fee Sheet notecodes field, which is escaped with the wrong context. Attackers with clinician access can inject a payload that breaks out of the single-quoted value attribute and executes in higher-privileged users' browsers.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_