---
id: "CVE-2026-49142"
kind: "vulnerability"
aliases: ["CVE-2026-49142"]
title: "OpenEMR: clinician SQL injection enables full admin account takeover"
severity: "high"
cvss: 8.8
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["healthcare", "mysql", "openemr", "runtime", "self-hosted"]
not_affected_if: ["no-clinician-accounts", "openemr-8.5.0-or-later"]
published_at: "2026-10-29T13:17:12+00:00"
first_seen_at: "2026-10-29T13:25:08+00:00"
updated_at: "2026-10-29T13:25:34+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-49142", "first_seen_at": "2026-10-29T13:25:08+00:00"}]
---

# OpenEMR: clinician SQL injection enables full admin account takeover

OpenEMR before 8.5.0 has a SQL injection flaw in its Syndromic Surveillance module, reachable through the form_icd_codes[] POST parameter. A user with Clinician-level access can read and change any database content, including bcrypt password hashes, and reset passwords to take over administrator accounts.

_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 file or admin footer; it is affected if below `8.5.0`.
- Confirm whether the Syndromic Surveillance module is in use by reviewing the module list in OpenEMR's administration settings.

## Fix

- Move to OpenEMR `8.5.0` or later.

## Timeline

- 2026-10-29T13:25:08+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-49142

## From the sources

OpenEMR before 8.5.0 contains an authenticated SQL injection vulnerability in the Syndromic Surveillance module that allows users with Clinician-level privileges to read and modify arbitrary database contents by submitting crafted values in the form_icd_codes[] POST parameter to the syndromicsurveillance/index endpoint. Attackers can inject an unquoted numeric IN() clause and UNION DISTINCT SELECT statement using hex-encoded literals to abuse MySQL extractvalue() for error-based exfiltration of bcrypt password hashes and execute stacked queries that reset passwords, resulting in full administrative account takeover.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_