CVE-2025-64094: DNN vulnerable to stored cross-site-scripting (XSS) via SVG upload
Summary Sanitization of the content of uploaded SVG files was not covering all possible XSS scenarios.
Details DNN validates the contents of SVG's to ensure they are valid and do not contain any malicious code. These checks were introduced as part of CVE-2025-48378.
However, the checks to ensure there are no script elements within the SVG files are not comprehensive and may allow some malicious SVG files to be uploaded.
As this vulnerability allows for the execution of arbitrary JavaScript code within the context of the user's browser, it can lead to a range of attacks, including data exfiltration, session hijacking, and defacement of the web application to name a few.
Other sources
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.
— NVD
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-64094?
CVE-2025-64094 has a high severity rating due to its potential for XSS attacks which can compromise web applications.
How do I fix CVE-2025-64094?
To fix CVE-2025-64094, upgrade DNN to version 10.1.1 or later to ensure complete sanitization of uploaded SVG files.
What types of attacks are possible due to CVE-2025-64094?
CVE-2025-64094 can lead to cross-site scripting (XSS) attacks, allowing attackers to inject malicious scripts into web pages.
Which versions of DNN are affected by CVE-2025-64094?
Versions of DNN prior to 10.1.1 are affected by CVE-2025-64094.
Is CVE-2025-64094 being actively exploited?
There have been reports indicating that CVE-2025-64094 may be actively exploited, making it crucial to apply the necessary updates.