CVE-2021-40374
A stored cross-site scripting (XSS) vulnerability was identified in Apperta Foundation OpenEyes 3...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2021-40374- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 3.5 Low
AV:N/AC:M/Au:S/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2021-40374- Updated
- 2026-11-02
EUVDEUVD-2021-27551 No score
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.
- Record
EUVD-2021-27551- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-6f7g-fvmv-x9vc
A stored cross-site scripting (XSS) vulnerability was identified in Apperta Foundation OpenEyes 3...
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.
- Record
GHSA-6f7g-fvmv-x9vc- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2021-40374- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | DCKento/CVE-2021-40374 | 2021-08-31 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-40374 is a medium vulnerability (CVSS 5.4) in Apperta Openeye, published April 6, 2022. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 1.24%, the 69th percentile. No source names a fixed version.