Azure MCP Server has Server-Side Request Forgery issue that allows authorized attacker to elevate privileges over a network
Server-Side Request Forgery (SSRF) in Azure MCP Server allows an authorized attacker to elevate privileges over a network.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | @azure/mcp | >= 2.0.0-beta.1, < 2.0.0-beta.17, >= 1.0.0, < 1.0.2 | 2.0.0-beta.17, 1.0.2 |
| .NET (NuGet) | Azure.Mcp | >= 2.0.0-beta.1, < 2.0.0-beta.17, >= 1.0.0, < 1.0.2 | 2.0.0-beta.17, 1.0.2 |
| Python (PyPI) | msmcp-azure | >= 2.0.0b14, < 2.0.0b17 | 2.0.0b17 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-26118
- https://github.com/microsoft/mcp/commit/804ff60293206c4d8e832f772097238561bf2c34
- https://github.com/microsoft/mcp
- https://github.com/microsoft/mcp/releases/tag/Azure.Mcp.Server-1.0.2
- https://github.com/microsoft/mcp/releases/tag/Azure.Mcp.Server-2.0.0-beta.17
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26118
- https://pypi.org/project/msmcp-azure
- https://github.com/advisories/GHSA-hhfx-wfvq-7g9c
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-918- Platform
- npm, .NET (NuGet), Python (PyPI)
- Package
@azure/mcp, Azure.Mcp, msmcp-azure- Disclosed
- 10.03.2026
- Updated
- 11.10.2026 14:17
Sources and licenses
OSV / GitHub Advisory Database - GHSA-hhfx-wfvq-7g9c - CC BY 4.0
OSV / GitHub Advisory Database - PYSEC-2026-2669 - PyPA Advisory Database; CC BY 4.0
Vulnerability history: @azure/mcp
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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