CVE-2026-40321
DotNetNuke.Core has stored cross-site-scripting (XSS) via SVG upload
- State
- Published
- Severity
- 8.1 High
- Published
- Apr 17, 2026
- Updated
- Apr 22, 2026
- Reserved
- Apr 10, 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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.1 High | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H | GitHub_M |
Weaknesses
- CWE-87 Improper Neutralization of Alternate XSS Syntax
Affected Products
| Product | Versions |
|---|---|
Dnn.Platformdnnsoftware |
|
References
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