CVE-2021-47776
MEDIUM WAF: Medium
CVSS 5.3
Published: 2026-01-15
CWE-918
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.
WAF Coverage Analysis
Server-Side Request Forgery (SSRF)
Medium WAF Coverage
OWASP: A10:2021 SSRF
934xxx - Node.js / Generic Injection
Affected Software
| Vendor | Product | Version |
|---|---|---|
| umbraco | umbraco_cms | 8.14.1 |
References
- our.umbraco.com (Product)
- releases.umbraco.com (Release Notes)
- www.exploit-db.com (Exploit, VDB Entry)