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Vulnerability Intelligence

CVE-2021-47776 | Mondoo Vulnerability Intelligence

Vulnerability IntelligenceCVE-2021-47776

CVE-2021-47776

MEDIUM6.9

Umbraco v8.14.1 - 'baseUrl' SSRF

Published Jan 15, 2026

Modified 1 weeks ago

Details

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.

References

https://our.umbraco.com/

https://releases.umbraco.com/all-releases

https://www.cve.org/CVERecord?id=CVE-2021-47776

https://www.exploit-db.com/exploits/50462

CVSS Analysis

CVSS v4.0

6.9

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Attack Requirements

NoneAT:N

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Vulnerable System

Vuln. Confidentiality

NoneVC:N

Vuln. Integrity

LowVI:L

Vuln. Availability

NoneVA:N

Subsequent System

Subseq. Confidentiality

LowSC:L

Subseq. Integrity

LowSI:L

Subseq. Availability

LowSA:L

6.9/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

Weakness Type (CWE)

Input Validation

Server-Side Request Forgery (SSRF)

Ecosystems

Timeline

PublishedJan 15, 2026

ModifiedMar 5, 2026