CVE-2021-47776
Medium
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.
SeverityMedium
CVSS5.3
Exploit probability—
Product
Umbraco Cms
PublishedJan 15, 2026
First seenJan 15, 2026
Weakness typeCWE-918Server-side request forgery (SSRF)
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| umbraco umbraco_cms | 8.14.1 | — |
| UmbracoCmsNuGet | No range specified | — |
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