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CVE-2026-26118 — Vulnerability in msmcp-azure — CVE Details

HIGH

Azure MCP Server has Server-Side Request Forgery issue that allows authorized attacker to elevate privileges over a network

Published March 10, 2026Updated September 10, 2026Source: osv

Summary

Server-Side Request Forgery (SSRF) in Azure MCP Server allows an authorized attacker to elevate privileges over a network.

Advisory Timeline

  • First published March 10, 2026 (216 days ago).
  • Last revised September 10, 2026 — 183 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

pip
Update msmcp-azure to 2.0.0b17 or later
pip install "msmcp-azure>=2.0.0b17"
npm
Update @azure/mcp to 1.0.2 or later
npm install @azure/mcp@1.0.2
NuGet
Update Azure.Mcp to 2.0.0-beta.17 or later
dotnet add package Azure.Mcp --version 2.0.0-beta.17
NuGet
Update Azure.Mcp to 1.0.2 or later
dotnet add package Azure.Mcp --version 1.0.2
npm
Update @azure/mcp to 2.0.0-beta.17 or later
npm install @azure/mcp@2.0.0-beta.17

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (5)

Affects 3 ecosystems: npm (1), nuget (1), pypi (1).

PackageEcosystemAffectedFixed In
msmcp-azure
pypi
All versions2.0.0b17
@azure/mcp
npm
All versions1.0.2
Azure.Mcp
nuget
All versions2.0.0-beta.17
Azure.Mcp
nuget
1.0.0, 1.0.11.0.2
@azure/mcp
npm
All versions2.0.0-beta.17

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

  • CWE-918
    Server-Side Request Forgery (SSRF)MITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 8.8 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Frequently Asked Questions

What is CVE-2026-26118?
Azure MCP Server has Server-Side Request Forgery issue that allows authorized attacker to elevate privileges over a network This vulnerability has been assigned a severity rating of HIGH (CVSS score: 8.8/10).
How do I check if my project is affected by CVE-2026-26118?
CVE-2026-26118 affects msmcp-azure, @azure/mcp and Azure.Mcp. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-26118 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
8.8

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-hhfx-wfvq-7g9c
PYSEC-2026-2669

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  • CVE-2024-35255
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