CVE-2026-40321HIGH 8.0EPSS p93.8%

CVE-2026-40321CVE-2026-40321

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.

Scoring

CVSS 3.18.0 (HIGH)
VectorCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
EPSS7.60% probability of exploitation · percentile 93.8% · 2026-06-19T12:03:05Z
Published2026-04-17
Last modified2026-04-24

Underlying weaknesses· 1

CWE-87

References

  1. https://github.com/dnnsoftware/Dnn.Platform/releases/tag/v10.2.2
  2. https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-ffq7-898w-9jc4

1

TypeTargetConfidenceTier
WeaknessImproper Neutralization of Alternate XSS Syntaxcwe-870%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

CVE
CVE-2025-64095
CVE
CVE-2025-52488
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CVE-2025-59545
CVE
DotNetNuke (DNN) Remote Code Execution Vulnerability
CVE
CVE-2025-25361
CVE
dotCMS Unrestricted Upload of File Vulnerability
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.