CVE-2021-47776
Umbraco v8.14.1 - 'baseUrl' SSRF
- State
- Published
- Severity
- 6.9 Medium
- Published
- Jan 15, 2026
- Updated
- Oct 8, 2026
- Reserved
- Jan 14, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L | VulnCheck |
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N | VulnCheck |
Weaknesses
- CWE-918 Server-Side Request Forgery (SSRF)
Affected Products
| Product | Versions |
|---|---|
Umbracoumbraco |
|
References
- ExploitDB-50462exploit
- Umbraco Official Homepageproduct
- Umbraco CMS Release Notesproduct
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