CVE-2026-40321

DotNetNuke.Core has stored cross-site-scripting (XSS) via SVG upload

Published Apr 17, 2026 CVSS 3.1 · 8.1 High EPSS 6.4% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
Github GHSA Github GHSA GHSA-ffq7-898w-9jc4 DotNetNuke.Core has stored cross-site-scripting (XSS) via SVG upload
History
Type Values Removed Values Added
First Time appeared Dnnsoftware dotnetnuke
CPEs cpe:2.3:a:dnnsoftware:dotnetnuke:*:*:*:*:*:*:*:*
Vendors & Products Dnnsoftware dotnetnuke
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Dnnsoftware
Dnnsoftware dnn Platform
Vendors & Products Dnnsoftware
Dnnsoftware dnn Platform
Type Values Removed Values Added
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.
Title DotNetNuke.Core has stored cross-site-scripting (XSS) via SVG upload
Weaknesses CWE-87
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Apr 22, 2026, 3:55 AM
Reserved
Apr 10, 2026, 9:41 PM
Status
Analyzed
Published
Apr 17, 2026, 10:16 PM
Modified
Oct 26, 2026, 10:10 PM