CVE-2021-47776

MEDIUM

Umbraco Cms - SSRF

Title source: rule

Description

Umbraco CMS v8.14.1 contains a server-side request forgery vulnerability that allows attackers to manipulate baseUrl parameters in multiple dashboard and help controller endpoints. Attackers can craft malicious requests to the GetContextHelpForPage, GetRemoteDashboardContent, and GetRemoteDashboardCss endpoints to trigger unauthorized server-side requests to external hosts.

Exploits (1)

exploitdb WORKING POC

by NgoAnhDuc · textwebappsaspx

https://www.exploit-db.com/exploits/50462

View Code ZIP pw:eip

References (3)

[Product] https://our.umbraco.com/

[Release Notes] https://releases.umbraco.com/all-releases

[Exploit, VDB Entry] https://www.exploit-db.com/exploits/50462

Scores

CVSS v3 5.3

EPSS 0.0001

EPSS Percentile 3.2%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Details

CWE

CWE-918

Status published

Products (3)

nuget/UmbracoCms NuGet

umbraco/Umbraco 8.14.1

umbraco/umbraco_cms 8.14.1

Published Jan 15, 2026

Tracked Since Feb 18, 2026