CVE-2026-24836 DotNetNuke.Core Vulnerable to Stored XSS in Scheduler LogNotes
Attackers can inject malicious scripts into scheduler log notes, leading to stored XSS execution in the admin interface.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-24836?
CVE-2026-24836 is a high-severity cross-site scripting vulnerability in Dnnsoftware Dotnetnuke, published on 27 Jan 2026. An attacker needs administrator access to exploit it, 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. Starting in version 9.0.0 and prior to versions 9.13.10 and 10.2.0, extensions could write richtext in log notes which can include scripts that would run in the PersonaBar when displayed. Versions 9.13.10 and 10.2.0 contain a fix for the issue.
Weakness: CWE-79
Which versions are affected by CVE-2026-24836?
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 | 10.02.0 |
DotNetNuke.Core NuGet | From 10.0.0 | 10.02.0 |
DotNetNuke.Core NuGet | From 9.0.0 to 9.13.9 | None |
DotNetNuke.Core NuGet | From 9.0.0 to 9.13.9 | None |
Products include Dnnsoftware Dotnetnuke.
How do I fix CVE-2026-24836?
Upgrade DotNetNuke.Core to 10.02.0 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-2026-24836 being exploited?
There is no known exploitation of CVE-2026-24836 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-2g5g-hcgh-q3rp.