---
id: "CVE-2026-126449"
page: "https://infrastack.ai/live/CVE-2026-126449"
kind: "vulnerability"
aliases: ["CVE-2026-126449"]
title: "OpenEMR: missing access checks let front office users change patient records"
severity: "high"
cvss: 7.1
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["healthcare", "openemr", "other", "self-hosted"]
not_affected_if: ["managed-hosting-patched", "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: "2026-11-13T10:53:07+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-126449", "first_seen_at": "2026-11-13T10:47:23+00:00"}]
exploit_sources: []
---

# OpenEMR: missing access checks let front office users change patient records

Link for people: https://infrastack.ai/live/CVE-2026-126449 (this .md is for agents)

OpenEMR before 8.5.0 lets low-privileged, logged-in front office users skip access control checks in immunizations.php, diagnosis_full.php and billing_process.php. Those users can add or delete immunizations, write encounter billing codes and run the billing processor.

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

## How to check

- Check the installed OpenEMR version and see whether it is below `8.5.0`
- Review whether front office accounts exist that should not be able to edit immunization, diagnosis or billing records

## Fix

- OpenEMR: move to `8.5.0` or later (per the advisory range in the sources)

## Timeline

- 2026-11-13T10:47:23+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-126449

## Documents

- [advisory] Vendor advisory: github.com https://github.com/openemr/openemr/security/advisories/GHSA-xp7w-8fx3-642x
- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/openemr-before-8.5.0-missing-authorization-in-immunizations-php-diagnosis-full-php-billing-process-php

## From the sources

OpenEMR before 8.5.0 contains a missing authorization vulnerability in immunizations.php, diagnosis_full.php, and billing_process.php that lets low-privileged users bypass ACL checks. Authenticated Front Office users can reuse their session CSRF token to add or delete immunizations, write encounter billing codes, and invoke the billing processor.

---

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