CVE-2020-9472 Unrestricted Upload of File with Dangerous Type in Umbraco CMS
Authenticated attackers can upload malicious files via the Install Package feature in Umbraco CMS, leading to remote code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-9472?
CVE-2020-9472 is a medium-severity vulnerability in Umbraco Umbraco Cms, published on 16 Mar 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Umbraco CMS 8.5.3 allows an authenticated file upload (and consequently Remote Code Execution) via the Install Package functionality.
Weakness: CWE-434
Which versions are affected by CVE-2020-9472?
2 open source packages ship an affected version, including UmbracoCms. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
UmbracoCms NuGet | All versions | 8.5.4 |
UmbracoCms NuGet | All versions | 8.5.4 |
Products include Umbraco Umbraco Cms.
How do I fix CVE-2020-9472?
Upgrade UmbracoCms to 8.5.4 or later.
Is CVE-2020-9472 being exploited?
There is no known exploitation of CVE-2020-9472 in the wild and no public exploit code.
Other vulnerabilities in Umbraco Umbraco Cms
- CVE-2025-67288 Umbraco CMS has an arbitrary file upload vulnerability
- CVE-2014-10074 File upload in n/a
- CVE-2012-1301 Server-side request forgery in n/a
- CVE-2012-10054 Umbraco CMS < 4.7.1 codeEditorSave.asmx RCE
- CVE-2025-32017 Umbraco has a Management API Vulnerability to Path Traversal With Authenticated Users
Sources
Also known as GHSA-j66f-h9hm-975m.