---
id: "CVE-2026-126448"
page: "https://infrastack.ai/live/CVE-2026-126448"
kind: "vulnerability"
aliases: ["CVE-2026-126448"]
title: "OpenEMR: missing access check lets low-privilege users edit shared note templates"
severity: "medium"
cvss: 5.3
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["healthcare", "openemr", "other", "self-hosted"]
not_affected_if: ["openemr-8.5.0-or-later"]
published_at: "2026-11-13T10:17:52+00:00"
first_seen_at: "2026-11-13T10:47:23+00:00"
updated_at: "2026-11-13T10:57:11+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-126448", "first_seen_at": "2026-11-13T10:47:23+00:00"}]
exploit_sources: []
---

# OpenEMR: missing access check lets low-privilege users edit shared note templates

Link for people: https://infrastack.ai/live/CVE-2026-126448 (this .md is for agents)

OpenEMR before 8.5.0 lets authenticated users without the nationnotes/nn_configure permission change shared Nation Notes templates by calling mutation endpoints directly. An attacker can alter clinical-note templates and assignments, since ajax_code.php and add_context.php lack access control and CSRF checks.

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

## How to check

- Check the installed OpenEMR version in the application's version setting; `8.5.0` or later is not affected.
- Review whether ordinary clinical staff accounts can reach Nation Notes template changes.

## Fix

- OpenEMR: move to `8.5.0` or later.

## Timeline

- 2026-11-13T10:47:23+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-126448

## Documents

- [advisory] Vendor advisory: github.com https://github.com/openemr/openemr/security/advisories/GHSA-m4cw-vx96-p6fj
- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/openemr-before-8.5.0-missing-authorization-in-nation-notes-configuration-handlers

## From the sources

OpenEMR before 8.5.0 contains a missing authorization vulnerability that allows authenticated users lacking nationnotes/nn_configure to modify shared Nation Notes templates by calling mutation endpoints directly. Attackers can send requests to ajax_code.php or add_context.php, which lack ACL and CSRF checks, to tamper with clinical-note templates and assignments.

---

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