Disclosure summary
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.
Source-reported weakness categories
CWE-918
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2021-47776
Open original source · Updated Oct 08, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| umbraco | umbraco_cms | 8.14.1 |
Original records & references
- NIST NVD record
- CVE Program record
- our.umbraco.com — Product
- releases.umbraco.com — Release Notes
- www.exploit-db.com — Exploit, VDB Entry
PUBLISHED 2026-01-15T11:16:09-05:00
MODIFIED 2026-10-08T12:16:44-04:00
INGESTED 2026-10-10T20:50:35-04:00