High
Umbraco CMS Authenticated File Upload
Umbraco Cloud 8.5.3 allows an authenticated file upload (and consequently Remote Code Execution) via the Install Packages functionality.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| .NET (NuGet) | UmbracoCMS.Core | <= 8.5.3 | no fix |
References
CVSS score
8.8/10
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-434- Platform
- .NET (NuGet)
- Package
UmbracoCMS.Core- Disclosed
- 24.05.2022
- Updated
- 11.10.2026 11:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-h68c-4jh3-cp9j - CC BY 4.0
Vulnerability history: UmbracoCMS.Core
All published vulnerabilities of this package (.NET (NuGet)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 5
- First → latest
- 05.2022 05.2024
- Without a fix
- 2
- Exploited in attacks
- 0
Severity breakdown
- High 1
- Medium 4
Disclosures per year
- 2022: 3
- 2023: 0
- 2024: 2
- 2025: 0
- 2026: 0
-
Umbraco CMS Authenticated File Upload this entry
Know which vulnerabilities affect your application
With the DockRay integration and software inventory enabled, DockRay checks reported component versions against known vulnerabilities and notifies you about confirmed matches. Coverage depends on the supported technology and available advisory data.