DNN Vulnerable to Stored Cross-Site Scripting (XSS) in the Prompt moduleGHSA-2qxc-mf4x-wr29
CRITICALGHSA-2qxc-mf4x-wr29 is a critical-severity (CVSS 9) Cross-site Scripting (XSS) vulnerability in DotNetNuke.Core. A fix is available for DotNetNuke.Core — see the affected versions and patch details below.
Exploitation Status
No confirmed exploitation observed yet
- A successful exploit gives an attacker total control of the affected component, not partial access.
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for GHSA-2qxc-mf4x-wr29.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
DotNetNuke.CoreReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects NuGet packages — download data is not available via public APIs for these ecosystems.
Description
Summary
The Prompt module allows execution of commands that can return raw HTML. Malicious input, even if sanitized for display elsewhere, can be executed when processed through certain commands, leading to potential script execution (XSS).
Description
The application sanitizes most user-submitted data before displaying it in entry forms. However, the Prompt module is capable of running commands whose output is treated as HTML. This creates a vulnerability where a malicious user can craft input containing embedded scripts or harmful markup.
If such malicious content is later processed by a Prompt command and returned as HTML, it bypasses the standard sanitation mechanisms. Simply executing a specific command through the Prompt module could render this untrusted data and cause unintended script execution in the browser specially in the context of a super-user.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| .NETNuGet | DotNetNuke.Core | all versions | 10.1.0dotnet add package DotNetNuke.Core --version 10.1.0 |
Affected Products
dotnetnukednnsoftwareDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for DotNetNuke.Core, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update DotNetNuke.Core to 10.1.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-2qxc-mf4x-wr29 is resolved across your whole dependency graph.
Workarounds
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.
Frequently Asked Questions
Is GHSA-2qxc-mf4x-wr29 in your dependencies?
Find it across NuGet, including transitive dependencies.