CVE-2025-48378 Dnn.Platform vulnerable to Stored Cross-Site Scripting (XSS) with svg files rendered inline

What is CVE-2025-48378?

CVE-2025-48378 is a medium-severity cross-site scripting vulnerability in Dnnsoftware Dotnetnuke, published on 23 May 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Prior to version 9.13.9, uploaded SVG files could contain scripts and if rendered inline those scripts could run allowing XSS attacks. Version 9.13.9 fixes the issue.

Weakness: CWE-79

Which versions are affected by CVE-2025-48378?

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

Products include Dnnsoftware Dotnetnuke.

How do I fix CVE-2025-48378?

Upgrade DotNetNuke.Core to 9.13.9 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-2025-48378 being exploited?

There is no known exploitation of CVE-2025-48378 in the wild and no public exploit code.

Other vulnerabilities in Dnnsoftware Dotnetnuke

• CVE-2017-9822 DotNetNuke (DNN) Remote Code Execution Exploited High 8.8
• CVE-2018-15811 DotNetNuke (DNN) Inadequate Encryption Strength Exploited High 7.5
• CVE-2018-18325 DotNetNuke (DNN) Inadequate Encryption Strength Exploited High 7.5
• CVE-2025-64095 DNN Insufficient Access Control - Image Upload allows for Site Content Overwrite Critical 10.0
• CVE-2006-3601 Privilege escalation in n/a Critical 10.0

All Dnnsoftware Dotnetnuke vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-m4hf-fxcg-cp34.