Umbraco CMS contains a server-side request forgery vulnerability
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.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| .NET (NuGet) | UmbracoCms | = 8.14.1 | no fix |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N- Weakness (CWE)
CWE-918- Platform
- .NET (NuGet)
- Package
UmbracoCms- Disclosed
- 15.01.2026
- Updated
- 11.10.2026 11:23
Sources and licenses
OSV / GitHub Advisory Database - GHSA-h66j-xm43-47pp - CC BY 4.0
Vulnerability history: UmbracoCms
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
- 7
- First → latest
- 04.2021 01.2026
- Without a fix
- 1
- Exploited in attacks
- 0
Severity breakdown
- Medium 6
- Low 1
Disclosures per year
- 2021: 3
- 2022: 0
- 2023: 0
- 2024: 3
- 2025: 0
- 2026: 1
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Umbraco CMS contains a server-side request forgery vulnerability this entry
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