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Advisory record · GHSA-ffq7-898w-9jc4

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

CVSS 8.1 HighEPSS 0.064 · 93rd percentile

Published by the GitHub Advisory Database at 10 Apr 2026, 20:42 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
DotNetNuke.CoreNuGet<10.2.210.2.2
Identifiers
GHSA-ffq7-898w-9jc4 · CVE-2026-40321
Weakness (CWE)
CWE-87
Tags
Published
10 Apr 2026
Updated
5 May 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

DotNetNuke.Core versions before 10.2.2 are vulnerable to stored cross-site scripting through SVG file uploads. A user who can upload files can submit a specially crafted SVG containing scripts, which can then run against both authenticated and unauthenticated visitors, with greater impact if a power user views it. Upgrade to DotNetNuke.Core 10.2.2, which fixes the issue.

Written 9 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.1 High 3.1 CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.064, the 93rd percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 15:22 UTC First seen by agentprime
  2. 31 Oct 2026, 15:22 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.