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CVE-2026-26118

Azure MCP Server Tools Elevation of Privilege Vulnerability

8.8 HighPublic exploitFix available

Server-side request forgery (ssrf) in Azure MCP Server allows an authorized attacker to elevate privileges over a network.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

1.06%Up 1.0 points since Mar 11, 2026
90%50%10%1%

What each source reports

CVE List Score used 8.8

Azure MCP Server Tools Elevation of Privilege Vulnerability

Server-side request forgery (ssrf) in Azure MCP Server allows an authorized attacker to elevate privileges over a network.

Record
CVE-2026-26118
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Weakness
CWE-918
Updated
2026-11-02
EUVDEUVD-2026-10689 8.8

Server-side request forgery (ssrf) in Azure MCP Server allows an authorized attacker to elevate privileges over a network.

Record
EUVD-2026-10689
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Updated
2026-11-02
GitHub AdvisoriesGHSA-hhfx-wfvq-7g9c 8.8

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.

Record
GHSA-hhfx-wfvq-7g9c
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-918
Updated
2026-11-02
NVD 8.8

Server-side request forgery (ssrf) in Azure MCP Server allows an authorized attacker to elevate privileges over a network.

Record
CVE-2026-26118
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-918
Updated
2026-11-02
OSVGHSA-hhfx-wfvq-7g9c 8.8

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.

Record
GHSA-hhfx-wfvq-7g9c
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-918
Updated
2026-11-02
OSVPYSEC-2026-2669 8.8

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.

Record
PYSEC-2026-2669
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
Azure.Mcp
NuGet
 2.0.0-beta.1 up to 2.0.0-beta.17
2.0.0-beta.17
Azure.Mcp
NuGet
 1.0.0 up to 1.0.2
1.0.2
@azure/mcp
npm
 2.0.0-beta.1 up to 2.0.0-beta.17
2.0.0-beta.17
msmcp-azure
PyPI
 2.0.0b14 up to 2.0.0b17
2.0.0b17
@azure/mcp
npm
 1.0.0 up to 1.0.2
1.0.2
Azure.Mcp
NuGet
 1.0.0 up to 1.0.2, plus listed versions
1.0.1
1.0.2

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
PoC in GitHubj-dahl7/mcp-attack-detection-sentinel2026-03-17

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-26118 is a high vulnerability (CVSS 8.8) in Microsoft Azure Mcp Server, published March 10, 2026. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 1.06%, the 64th percentile. Fixed in Azure.Mcp 2.0.0-beta.17.

References

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