EUVD-2026-78934Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary rating from Vendor (GitHub_M) · only source for this CVE.
CVSS VectorVendor: GitHub_M
Lifecycle Timeline
5DescriptionCVE.org
Lokka is a Model Context Protocol server for Microsoft 365, including Microsoft Graph and other services. Prior to 2.1.2, the Lokka-Microsoft tool in src/mcp/src/main.ts uses direct URL string concatenation to append the user-controlled path value to the management.azure.com base URL. A specially crafted path can alter URL authority parsing and cause an Azure Resource Manager bearer token to be sent to an unintended host. This issue is fixed in version 2.1.2.
AnalysisAI
URL path injection in the Lokka MCP server for Microsoft 365 (versions prior to 2.1.2) allows a crafted path value passed to the Lokka-Microsoft tool to break out of the management.azure.com base URL, causing a valid Azure Resource Manager bearer token to be transmitted to an attacker-controlled host. The flaw is a classic server-side request forgery / token-exfiltration pattern (CWE-918) caused by string concatenation instead of the standard URL API when building ARM request URLs. …
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Same weakness CWE-918 – Server-Side Request Forgery (SSRF)
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External POC / Exploit Code
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