CVE-2026-58201

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.

• https://github.com/merill/lokka/commit/babead878f44cc2face2f8ee55d8b706e420947e
• https://github.com/merill/lokka/pull/47
• https://github.com/merill/lokka/security/advisories/GHSA-g2gw-q38m-vjfc