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CVE-2021-40374

MediumPublished

A stored cross-site scripting (XSS) vulnerability was identified in Apperta Foundation OpenEyes 3.5.1. Updating a patient's details allows remote attackers...

Published: Apr 6, 2022
Updated: Aug 4, 2024
Assigning CNA: mitre
Evidence observed: Aug 5, 2026

Primary CVSS

5.4/ 10Medium

nvd · CVSS 3.1

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

EPSS probability estimate

1.2%

Low · next 30 days

Percentile: 67.3%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

A stored cross-site scripting (XSS) vulnerability was identified in Apperta Foundation OpenEyes 3.5.1. Updating a patient's details allows remote attackers to inject arbitrary web script or HTML via the Address1 parameter. This JavaScript then executes when the patient profile is loaded, which could be used in a XSS attack.

Sources

CVE-2021-40374PoC
Stored Cross-site Scripting in OpenEyes 3.5.1

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