CVE-2026-40321CWE-87

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

High · published April 17, 2026

CVSS v3.1
8.1
EPSS
0%
Percentile
28.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00363 · 28.9th percentile
Weakness
CWE-87 · Improper Neutralization of Alternate XSS Syntax
Published
2026-04-17T21:10Z
EPSS history
Timeline
  • 17 APR 21:10Z
    DotNetNuke.Core has stored cross-site-scripting (XSS) via SVG upload
    cvelistv5