GitHub Advisoryadvisory · NuGet, npm, PyPI
GHSA-hhfx-wfvq-7g9c Azure MCP Server has Server-Side Request Forgery issue that allows authorized attacker to elevate privileges over a network
HIGH
Official page ↗
- Aliases
- CVE-2026-26118
- Ecosystem
- NuGet, npm, PyPI
- Packages
- Azure.Mcp, @azure/mcp, msmcp-azure
- Severity
- High
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-918
- Reviewed
- 2026-03-11
Affected packages
• NuGet Azure.Mcp: >= 2.0.0-beta.1, < 2.0.0-beta.17 → fixed in 2.0.0-beta.17
• NuGet Azure.Mcp: >= 1.0.0, < 1.0.2 → fixed in 1.0.2
• npm @azure/mcp: >= 2.0.0-beta.1, < 2.0.0-beta.17 → fixed in 2.0.0-beta.17
• PyPI msmcp-azure: >= 2.0.0b14, < 2.0.0b17 → fixed in 2.0.0b17
• npm @azure/mcp: >= 1.0.0, < 1.0.2 → fixed in 1.0.2
Description
Server-Side Request Forgery (SSRF) in Azure MCP Server allows an authorized attacker to elevate privileges over a network.
Related
Alias · CVE (1)
- CVE-2026-26118 Server-side request forgery (ssrf) in Azure MCP Server allows an authorized attacker to elevate privileges over a network. vulnerability
Weakness · CWE (1)
- CWE-918 Server-Side Request Forgery weakness
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-26118 advisory
- https://github.com/microsoft/mcp/commit/804ff60293206c4d8e832f772097238561bf2c34 web
- https://github.com/microsoft/mcp package
- https://github.com/microsoft/mcp/releases/tag/Azure.Mcp.Server-1.0.2 web
- https://github.com/microsoft/mcp/releases/tag/Azure.Mcp.Server-2.0.0-beta.17 web
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26118 web