Server-side Request Forgery (SSRF) Affecting @merill/lokka package, versions <2.1.2
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- published5 Jul 2026
- disclosed19 Jun 2026
- credithackchang
Introduced: 19 Jun 2026
CVE-2026-58201 (opens in a new tab)Common Vulnerabilities and Exposures (CVE) are common identifiers for publicly known security vulnerabilities
Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade @merill/lokka to version 2.1.2 or higher.
Overview
@merill/lokka is a Lokka is a Model Context Protocol (MCP) server for Microsoft Graph.
Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) via improper validation of user-supplied input in the process constructing Azure Resource Manager request URLs. An attacker can cause bearer tokens to be sent to an unintended host by supplying specially crafted path values.