CVE-2026-40321
DotNetNuke.Core has stored cross-site-scripting (XSS) via SVG upload
CVSS Score
8.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-87 |
| Vendor | dnnsoftware |
| Product | dnn.platform |
| Published | Apr 17, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
dnnsoftware / Dnn.Platform
< 10.2.2