CVE-2020-9471

HIGH

Umbraco Cms - Unrestricted File Upload

Title source: rule

Description

Umbraco Cloud 8.5.3 allows an authenticated file upload (and consequently Remote Code Execution) via the Install Packages functionality.

Exploits (1)

gitlab WORKING POC
by eLeN3Re · poc
https://gitlab.com/eLeN3Re/cve-2020-9471

References (1)

Scores

CVSS v3 8.8
EPSS 0.0294
EPSS Percentile 86.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Classification

CWE
CWE-434
Status published

Affected Products (2)

umbraco/umbraco_cms
nuget/UmbracoCMS.Core NuGet

Timeline

Published Mar 16, 2020
Tracked Since Feb 18, 2026