Answer in brief
CVE-2026-26118 records a High severity (CVSS 8.8) vulnerability in Azure MCP Server has Server-Side Request Forgery issue that allows authorized attacker to elevate privileges over a network. The current sources do not mark it as known exploited. The current feed maps @azure/mcp (npm), @azure/mcp (npm), Azure.Mcp (nuget), Azure.Mcp (nuget) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps @azure/mcp (npm), @azure/mcp (npm), Azure.Mcp (nuget), Azure.Mcp (nuget) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| @azure/mcpnpm | >=2.0.0-beta.1 <2.0.0-beta.17 | 2.0.0-beta.17 |
| @azure/mcpnpm | >=1.0.0 <1.0.2 | 1.0.2 |
| Azure.Mcpnuget | >=2.0.0-beta.1 <2.0.0-beta.17 | 2.0.0-beta.17 |
| Azure.Mcpnuget | >=1.0.0 <1.0.2 | 1.0.2 |
| msmcp-azurepypi | >=2.0.0b14 <2.0.0b17 | 2.0.0b17 |
Published upstream
Mar 10, 2026
Evidence: source:osv:source_dates:source-dates:recordSource modified
Sep 10, 2026
Evidence: source:osv:source_dates:source-dates:recordFirst seen by HOL
Sep 10, 2026
Server-Side Request Forgery (SSRF) in Azure MCP Server allows an authorized attacker to elevate privileges over a network.
Quoted source text, attributed separately from HOL analysis.