SSRF Elevation of Privilege in Azure MCP Server Tools
CVE-2026-26118 is a server-side request forgery (SSRF) vulnerability in Azure MCP Server / Azure MCP Server Tools. According to the provided content, an authorized attacker can supply specially crafted input, including a malicious URL or user-controlled parameters to a server tool that accepts such input, causing the MCP server to make an outbound request on the attacker’s behalf. The vulnerable behavior can result in the outbound request carrying the server’s managed identity token, allowing the attacker to capture that token. Microsoft classifies the issue as an elevation-of-privilege vulnerability exploitable over the network. The provided content identifies the weakness as CWE-918 and gives a CVSS v3.1 vector of AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
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Remediation
Patch, then assume compromise.
Exploits
No valid public exploits. Mallory filtered out 2 candidates as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
13 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A server-side request forgery vulnerability in Azure MCP Server that can allow an authorized attacker to capture the server's managed identity token and gain access to the permissions available to that identity, resulting in increased network privilege.
A vulnerability in Azure MCP Server Tools where specially crafted input could trigger an outbound request that exposes a managed identity token.
An elevation-of-privilege vulnerability in Azure MCP Server Tools caused by SSRF that could allow token capture (managed identity) and subsequent access to resources tied to that identity.
An SSRF vulnerability in Azure Model Context Protocol (MCP) Server Tools that can be leveraged for elevation of privilege in AI connector infrastructure.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.