---
id: "CVE-2026-126442"
page: "https://infrastack.ai/live/CVE-2026-126442"
kind: "vulnerability"
aliases: ["CVE-2026-126442"]
title: "OpenEMR: low-privilege users can reset patient portal logins"
severity: "high"
cvss: 8.6
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["healthcare", "openemr", "other", "php", "self-hosted"]
not_affected_if: ["patient-portal-disabled", "version-8.5.0-or-later"]
published_at: "2026-11-13T10:17:51+00:00"
first_seen_at: "2026-11-13T10:47:22+00:00"
updated_at: "2026-11-13T10:50:47+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-126442", "first_seen_at": "2026-11-13T10:47:22+00:00"}]
exploit_sources: []
---

# OpenEMR: low-privilege users can reset patient portal logins

Link for people: https://infrastack.ai/live/CVE-2026-126442 (this .md is for agents)

OpenEMR before 8.5.0 has a missing authorization check in create_portallogin.php, so a low-privilege logged-in user can replace patient portal credentials. An attacker can take over patient portal accounts, read protected health information, and lock patients out.

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

## How to check

- Check the OpenEMR version in use; versions before `8.5.0` are listed as affected.
- Confirm whether the patient portal is enabled in the deployment.

## Fix

- OpenEMR: move to `8.5.0` or later, per the product range in the source.

## Timeline

- 2026-11-13T10:47:22+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-126442

## Documents

- [advisory] Vendor advisory: github.com https://github.com/openemr/openemr/security/advisories/GHSA-83hq-c876-fcwf
- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/openemr-before-8.5.0-missing-authorization-via-create-portallogin-php-portal-takeover

## From the sources

OpenEMR before 8.5.0 contains a missing authorization vulnerability in create_portallogin.php that allows low-privilege authenticated users to replace patient portal credentials without ACL checks. Attackers can select a victim patient in session and post replacement credentials to take over portal accounts, read PHI, and lock patients out.

---

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