CVE-2025-59539 DNN affected by Stored Cross-Site Scripting (XSS) in Profile Biography field

What is CVE-2025-59539?

CVE-2025-59539 is a medium-severity cross-site scripting vulnerability in Dnnsoftware Dotnetnuke, published on 23 Sep 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 version 10.1.0, when embedding information in the Biography field, even if that field is not rich-text, users could inject javascript code that would run in the context of the website and to any other user that can view the profile including administrators and/or superusers. This issue has been patched in version 10.1.0.

Weakness: CWE-79

Which versions are affected by CVE-2025-59539?

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

Products include Dnnsoftware Dotnetnuke.

How do I fix CVE-2025-59539?

Upgrade DotNetNuke.Core to 10.1.0 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-2025-59539 being exploited?

There is no known exploitation of CVE-2025-59539 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-7rcc-q6rq-jpcm.