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CVE-2026-26118

33
FAUCET Score

CVE-2026-26118 identifies a Server-Side Request Forgery (SSRF) vulnerability within Microsoft Azure MCP Server, enabling an authorized attacker to elevate privileges over a network. This high-severity flaw, with a CVSS score of 8.8, requires low privileges and low attack complexity, posing a significant risk to confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, no public exploit code available, and it is not listed on CISA's KEV catalog, though it has received some community and media attention.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.0.0CPE matchmatch criteria
cpe:2.3:a:microsoft:azure_mcp_server:*:*:*:*:*:*:*:*
2.0.0CPE matchmatch criteria
cpe:2.3:a:microsoft:azure_mcp_server:2.0.0:beta1:*:*:*:*:*:*
2.0.0CPE matchmatch criteria
cpe:2.3:a:microsoft:azure_mcp_server:2.0.0:beta10:*:*:*:*:*:*
2.0.0CPE matchmatch criteria
cpe:2.3:a:microsoft:azure_mcp_server:2.0.0:beta11:*:*:*:*:*:*
2.0.0CPE matchmatch criteria
cpe:2.3:a:microsoft:azure_mcp_server:2.0.0:beta12:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.96%
Probability of exploitation in next 30 days
EPSS Percentile
57.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0096 is in the 54th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (10)

microsoftpatch availablevia msrc
Product: Azure MCP Server Tools 1.0.0 (npm)Fixed in: 1.0.2
View patch
microsoftpatch availablevia msrc
Product: Azure MCP Server Tools 2.0.0 (NuGet)Fixed in: 2.0.0-beta.17
View patch
microsoftpatch availablevia msrc
Product: Azure MCP Server Tools 2.0.0 (npm)Fixed in: 2.0.0-beta.17
View patch
microsoftpatch availablevia msrc
Product: Azure MCP Server Tools 2.0.0 (PyPi)Fixed in: 2.0.0-beta.17
View patch
microsoftpatch availablevia msrc
Product: Azure MCP Server Tools 1.0.0 (NuGet)Fixed in: 1.0.2
View patch
npmpatch availablevia ghsa
Product: @azure/mcpFixed in: 2.0.0-beta.17
npmpatch availablevia ghsa
Product: @azure/mcpFixed in: 1.0.2
nugetpatch availablevia ghsa
Product: Azure.McpFixed in: 2.0.0-beta.17
nugetpatch availablevia ghsa
Product: Azure.McpFixed in: 1.0.2
pippatch availablevia ghsa
Product: msmcp-azureFixed in: 2.0.0b17

Vendor Advisories (2)

nugetGHSA-hhfx-wfvq-7g9chigh

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

Mar 10, 2026
microsoft2026-Mar/CVE-2026-26118Important

Azure MCP Server Tools Elevation of Privilege Vulnerability

Mar 10, 2026

References

msrc.microsoft.com / update-guide/vulnerability/CVE-2026-26118
Vendor Advisory