OpenEMR 5.0.2.1 - Remote Code Execution | Advisories

Advisories

OpenEMR 5.0.2.1 - Remote Code Execution

severity: medium
date: January 21, 2026
Affecting: OpenEMR 5.0.2.1
CVE: CVE-2021-47817
CWE: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSS: 4.8
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
References: ExploitDB-49784
OpenEMR Official Website
OpenEMR 5.0.2.1 Download
SonarSource Vulnerability Analysis
Vulnerability Demonstration Video
Credit: Hato0, BvThTrd
Description: OpenEMR 5.0.2.1 contains a cross-site scripting vulnerability that allows authenticated attackers to inject malicious JavaScript through user profile parameters. Attackers can exploit the vulnerability by crafting a malicious payload to download and execute a web shell, enabling remote command execution on the vulnerable OpenEMR instance.