How severe is CVE-2021-47817?

CVE-2021-47817 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-47817 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-47817?

CVE-2021-47817 affects Open-emr Openemr. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-47817?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2021-47817 have an EU (EUVD) identifier?

Yes. CVE-2021-47817 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3618.

When was CVE-2021-47817 published?

CVE-2021-47817 was published on 2026-01-21 and last updated on 2026-06-17.

CVE-2021-47817

CVE-2021-47817 is a medium-severity vulnerability in Open-emr Openemr with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v4: 4.8
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-3618
Weakness: CWE-79
Affected product: Open-emr Openemr
Published: 2026-01-21
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-47817?: 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.
How severe is CVE-2021-47817?: CVE-2021-47817 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-47817 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-47817?: CVE-2021-47817 affects Open-emr Openemr. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-47817?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2021-47817 have an EU (EUVD) identifier?: Yes. CVE-2021-47817 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3618.
When was CVE-2021-47817 published?: CVE-2021-47817 was published on 2026-01-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:open-emr:openemr:5.0.2.1:*:*:*:*:*:*:*

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