# CVE-2026-40321

## Summary

- **CVE ID:** CVE-2026-40321
- **Severity:** HIGH
- **CVSS Score:** 8.1 (CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H)
- **CWE:** CWE-87
- **Published:** Apr 17, 2026
- **Last Modified:** Apr 22, 2026

## Description

DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Prior to version 10.2.2, a user could upload a specially crafted SVG file that could include scripts that can target both authenticated and unauthenticated DNN users. The impact is increased if the scripts are run by a power user. Version 10.2.2 patches the issue.

## Affected Products

- dnnsoftware — Dnn.Platform (< 10.2.2)

## References

- [CNA](https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-ffq7-898w-9jc4)
- [CNA](https://github.com/dnnsoftware/Dnn.Platform/releases/tag/v10.2.2)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 7.60%
- **EPSS Percentile:** 94.2

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._