CVE-2026-24784 DotNetNuke.Core has a potential XSS vulnerability in modules' header and footer
A content editor can inject malicious scripts into module headers or footers, allowing execution in other users' browsers.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-24784?
CVE-2026-24784 is a medium-severity cross-site scripting vulnerability in Dnnsoftware Dotnetnuke, published on 27 Jan 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Starting in version 9.0.0 and prior to versions 9.13.10 and 10.2.0, a content editor could inject scripts in module headers/footers that would run for other users. Versions 9.13.10 and 10.2.0 contain a fix for the issue.
Weakness: CWE-79
Which versions are affected by CVE-2026-24784?
4 open source packages ship an affected version, including DotNetNuke.Core. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
DotNetNuke.Core NuGet | From 10.0.0 | 10.2.0 |
DotNetNuke.Core NuGet | From 10.0.0 | 10.2.0 |
DotNetNuke.Core NuGet | From 9.0.0 | 9.13.10 |
DotNetNuke.Core NuGet | From 9.0.0 | 9.13.10 |
Products include Dnnsoftware Dotnetnuke.
How do I fix CVE-2026-24784?
Upgrade DotNetNuke.Core to a fixed version for your release line: 10.2.0 or 9.13.10.
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-2026-24784 being exploited?
There is no known exploitation of CVE-2026-24784 in the wild and no public exploit code.
Other vulnerabilities in Dnnsoftware Dotnetnuke
- CVE-2017-9822 DotNetNuke (DNN) Remote Code Execution
- CVE-2018-15811 DotNetNuke (DNN) Inadequate Encryption Strength
- CVE-2018-18325 DotNetNuke (DNN) Inadequate Encryption Strength
- CVE-2025-64095 DNN Insufficient Access Control - Image Upload allows for Site Content Overwrite
- CVE-2006-3601 Privilege escalation in n/a
Sources
Also known as GHSA-jjwg-4948-6wxp.