GHSA-3m8r-w7xg-jqvw — DNN.PLATFORM
CRITICALGHSA-3m8r-w7xg-jqvw is a critical-severity (CVSS 10) Unrestricted File Upload vulnerability in DNN.PLATFORM. 1 public exploit reference exists, so weaponization risk is real. A fix is available for DNN.PLATFORM — see the affected versions and patch details below.
DNN Insufficient Access Control - Image Upload allows for Site Content Overwrite
Exploitation Status
No confirmed exploitation observed yet
- CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
- 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-3m8r-w7xg-jqvw.
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-3m8r-w7xg-jqvw 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 378,567 CVEs with a current EPSS score, this one falls in the 10–50% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
DNN.PLATFORMReal-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 10.1.1, the default HTML editor provider allows unauthenticated file uploads and images can overwrite existing files. An unauthenticated user can upload and replace existing files allowing defacing a website and combined with other issue, injection XSS payloads. This vulnerability is fixed in 10.1.1.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| .NETNuGet | DNN.PLATFORM | all versions | 10.1.1dotnet add package DNN.PLATFORM --version 10.1.1 |
Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for DNN.PLATFORM, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update DNN.PLATFORM to 10.1.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-3m8r-w7xg-jqvw 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-3m8r-w7xg-jqvw can be triaged on real exposure rather than presence alone.
Tailored to GHSA-3m8r-w7xg-jqvw. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
How to detect GHSA-3m8r-w7xg-jqvw
A community-maintained Nuclei template exists for this CVE. You can scan for it directly:
nuclei -id ghsa-3m8r-w7xg-jqvw -u https://target- Template
- DNN - Unrestricted Arbitrary File Upload
- Severity
- critical
- Impact
- Unauthenticated attackers can upload and overwrite files, leading to website defacement and cross-site scripting attacks.
- Remediation
- Update to version 10.1.1 or later.
Template by ProjectDiscovery nuclei-templates (DhiyaneshDk, pussycat0x), MIT licensed. View the full template. Scan only systems you are authorised to test.
Frequently Asked Questions
Is GHSA-3m8r-w7xg-jqvw in your dependencies?
O3 Security finds GHSA-3m8r-w7xg-jqvw across NuGet dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.