Server-side Request Forgery in Azure MCP Server
CVE-2026-26118

8.8HIGH

Key Information:

Vendor

Microsoft
Status
Azure Mcp Server Tools 1.0.0 (npm)
Azure Mcp Server Tools 1.0.0 (nuget)
Azure Mcp Server Tools 2.0.0 (npm)
Azure Mcp Server Tools 2.0.0 (nuget)
Vendor
CVE Published:
10 March 2026

What is CVE-2026-26118?

A vulnerability exists in Azure MCP Server that allows for server-side request forgery (SSRF). This flaw can be exploited by an authorized attacker to send crafted requests that can potentially elevate their privileges and access internal resources over the network. It is essential for organizations using Azure MCP Server to apply security updates and closely monitor network activity to mitigate the risks associated with this vulnerability.

Affected Version(s)

Azure MCP Server Tools 1.0.0 (npm) 1.0.0 < 1.0.2

Azure MCP Server Tools 1.0.0 (NuGet) 1.0.0 < 1.0.2

Azure MCP Server Tools 2.0.0 (npm) 2.0.0-beta.1 < 2.0.0-beta.17

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.