CVE-2021-47817

OpenEMR 5.0.2.1 - Remote Code Execution

OpenEMR 5.0.2.1 contains a cross-site scripting vulnerability in user profile parameters that authenticated attackers can chain with a file upload to achieve remote code execution. 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.

Affected

OpenEMR Foundation, Inc. · OpenEMR

CVSS v4.0 VULNCHECK

4.8 MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 VULNCHECK

5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS

0.82% chance of exploitation in the next 30 days, 57th percentile

Published

2026-01-21

Updated

2026-05-25

Proof-of-concept exploits (1)

• https://www.exploit-db.com/exploits/49784

Security advisories

• https://blog.sonarsource.com/openemr-5-0-2-1-command-injection-vulnerability?utm_medium=c…
• https://www.vulncheck.com/advisories/openemr-remote-code-execution
• https://sourceforge.net/projects/openemr/files/OpenEMR%20Current/5.0.2.1/openemr-5.0.2.ta…
• https://www.open-emr.org

References

• CVE Record
• NVD entry