CVE-2020-5186 DNN XSS Vulnerability
Cross-site scripting vulnerability in DNN allows attackers to inject malicious scripts, potentially leading to session hijacking or code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-5186?
CVE-2020-5186 is a medium-severity cross-site scripting vulnerability in Dnnsoftware Dotnetnuke, published on 24 Feb 2020. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
DNN (formerly DotNetNuke) through 9.4.4 allows XSS (issue 1 of 2).
Weakness: CWE-79
Which versions are affected by CVE-2020-5186?
2 open source packages ship an affected version, including DotNetNuke.Core. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
DotNetNuke.Core NuGet | All versions to 9.4.4 | None |
DotNetNuke.Core NuGet | All versions to 9.4.4 | None |
Products include Dnnsoftware Dotnetnuke.
How do I fix CVE-2020-5186?
No fix has been published for CVE-2020-5186 yet. Limit exposure of the affected software until one is available.
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-2020-5186 being exploited?
There is no known exploitation of CVE-2020-5186 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-9phr-h5mx-4fp6.