CVE-2025-64094 DNN vulnerable to stored cross-site-scripting (XSS) via SVG upload

Medium 6.4 Published 28 Oct 2025 Updated 29 Oct 2025

Attackers can execute arbitrary scripts in victim browsers by uploading malicious SVG files to the DNN CMS platform.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2025-64094?

CVE-2025-64094 is a medium-severity cross-site scripting vulnerability in Dnnsoftware Dotnetnuke, published on 28 Oct 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Prior to 10.1.1, sanitization of the content of uploaded SVG files was not covering all possible XSS scenarios. This vulnerability exists because of an incomplete fix for CVE-2025-48378. This vulnerability is fixed in 10.1.1.

Weakness: CWE-79

Which versions are affected by CVE-2025-64094?

2 open source packages ship an affected version, including DotNetNuke.Core. It affects 1 product.

Package	Affected	Fixed in
`DotNetNuke.Core` NuGet	All versions	`10.1.1`
`DotNetNuke.Core` NuGet	All versions	`10.1.1`

Products include Dnnsoftware Dotnetnuke.

How do I fix CVE-2025-64094?

Upgrade DotNetNuke.Core to 10.1.1 or later.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2025-64094 being exploited?

There is no known exploitation of CVE-2025-64094 in the wild and no public exploit code.

All Dnnsoftware Dotnetnuke vulnerabilities

Sources

Also known as GHSA-hmvq-8p83-cq52.