CVE-2021-47817

Name: CVE-2021-47817
Creator: NVD / NIST
Published: 2026-01-21T18:16:09.633+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.8/10EPSS 0.67%

Last modified Jun 17, 2026

CVE-2021-47817 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. 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.. EPSS estimates a 0.67% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

5.4/10

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

CVSS 4.0

4.8/10

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/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

EPSS Probability

0.67%

47.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Open-Emr	Openemr	5.0.2.1

References

https://blog.sonarsource.com/openemr-5-0-2-1-command-injection-vulnerability?utm_medium=cpc&utm_source=twitter&utm_campaign=openemr&utm_term=security&utm_content=tofuExploit, Patch, Third Party Advisory
https://sourceforge.net/projects/openemr/files/OpenEMR%20Current/5.0.2.1/openemr-5.0.2.tar.gz/downloadProduct
https://www.exploit-db.com/exploits/49784Exploit, Third Party Advisory, VDB Entry
https://www.open-emr.org/Product
https://www.vulncheck.com/advisories/openemr-remote-code-executionThird Party Advisory
https://www.youtube.com/watch?v=H8VWNwWgYJo&feature=emb_logoExploit

Timeline

Published: Jan 21, 2026
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-47817?

How severe is CVE-2021-47817?

CVE-2021-47817 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 0.67% probability of exploitation in the next 30 days.

How do I fix CVE-2021-47817?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-47817?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST