Vulnerability · Published Mar 10, 2026 · Assigned by microsoft
CVE-2026-26118Azure MCP Server Tools Elevation of Privilege Vulnerability
High 8.8
In plain English
A high-severity server-side request forgery in Azure MCP Server Tools 1.0.0 (npm) from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 65% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)1.1%top 35.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Public PoC
Official description
Server-side request forgery (ssrf) in Azure MCP Server allows an authorized attacker to elevate privileges over a network.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| NuGet | azure.mcp | 2.0.0-beta.17 | GHSA-hhfx-wfvq-7g9c |
| NuGet | azure.mcp | 1.0.2 | GHSA-hhfx-wfvq-7g9c |
| PyPI | msmcp-azure | 2.0.0b17 | GHSA-hhfx-wfvq-7g9c |
| PyPI | msmcp-azure | 2.0.0b17 | PYSEC-2026-2669 |
| npm | @azure/mcp | 2.0.0-beta.17 | GHSA-hhfx-wfvq-7g9c |
| npm | @azure/mcp | 1.0.2 | GHSA-hhfx-wfvq-7g9c |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Azure MCP Server Tools 1.0.0 (npm) | 1.0.0 – before 1.0.2 |
| Microsoft | Azure MCP Server Tools 1.0.0 (NuGet) | 1.0.0 – before 1.0.2 |
| Microsoft | Azure MCP Server Tools 2.0.0 (npm) | 2.0.0-beta.1 – before 2.0.0-beta.17 |
| Microsoft | Azure MCP Server Tools 2.0.0 (NuGet) | 2.0.0-beta.1 – before 2.0.0-beta.17 |
| Microsoft | Azure MCP Server Tools 2.0.0 (PyPi) | 2.0.0-beta.1 – before 2.0.0-beta.17 |
Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
References
- Azure MCP Server Tools Elevation of Privilege Vulnerability vendor-advisory, patch