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.NET
.NET NuGet
Not in CISA KEV
MEDIUM severity

DNN File Upload VulnerabilityGHSA-vjcm-j85r-7p68

MEDIUM

GHSA-vjcm-j85r-7p68 is a medium-severity (CVSS 6.5) Unrestricted File Upload vulnerability in DotNetNuke.Core. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

Also known asCVE-2020-5188
Published
Updated
Affected
1 pkg
Patched
See advisory
Exploits
1 known
Exploitation data as of Oct 30, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.9%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs79th percentile — riskier than 79% of all scored CVEsHighest risk
0.00%0.78%1.57%2.35%0.3%1.9%Apr 26Aug 26Oct 26

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

1 pkg affected
.NETDotNetNuke.Core

Real-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) through 9.4.4 has a File upload vulnerability via bypassing client-side file extension check

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
.NETNuGetDotNetNuke.Coreall versionsNo fix

Affected Products

1 product · 1 configurations
Application
dotnetnukednnsoftware
≤ 9.4.4
range
Exploits & PoCs
1

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

DNN (formerly DotNetNuke) through 9.4.4 has Insecure Permissions.

packetstormsecurity.comNVDJul 2021

Detection & mitigation playbook

Open-source dependency

  1. Detect

    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.

  2. Remediation status

    The records we use list no patched version of DotNetNuke.Core for GHSA-vjcm-j85r-7p68. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

  3. Mitigate without a patch

    Treat uploaded files as untrusted until proven otherwise: validate the actual content type rather than the supplied extension, store uploads outside the web root on a volume mounted without execute permission, and rename them to server-generated identifiers so an attacker cannot choose the path a request will later resolve.

Frequently Asked Questions

DNN (formerly DotNetNuke) through 9.4.4 has a File upload vulnerability via bypassing client-side file extension check
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DNN File Upload Vulnerability (Medium 6.5)