GHSA-w9pf-h6m6-v89h is a critical-severity (CVSS 9.1) Cross-site Scripting (XSS) vulnerability in DotNetNuke.Core. A fix is available for DotNetNuke.Core — see the affected versions and patch details below.
DotNetNuke.Core Vulnerable to Stored XSS via Module Title
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-w9pf-h6m6-v89h.
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
GHSA-w9pf-h6m6-v89h plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 377,636 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
DotNetNuke.Core.NETDotNetNuke.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
DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Prior to versions 9.13.10 and 10.2.0, module title supports richtext which could include scripts that would execute in certain scenarios. Versions 9.13.10 and 10.2.0 contain a fix for the issue.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| .NETNuGet | DotNetNuke.Core | all versions | 9.13.10dotnet add package DotNetNuke.Core --version 9.13.10 |
| .NETNuGet | DotNetNuke.Core | ≥ 10.0.0&&< 10.2.0 | 10.2.0dotnet add package DotNetNuke.Core --version 10.2.0 |
Detection & 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 9.13.10 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-w9pf-h6m6-v89h is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-w9pf-h6m6-v89h can be triaged on real exposure rather than presence alone.
Tailored to GHSA-w9pf-h6m6-v89h. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-w9pf-h6m6-v89h in your dependencies?
O3 Security finds GHSA-w9pf-h6m6-v89h across NuGet dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.