CVE-2026-45555: MarcelRoozekrans roslyn-codelens-mcp, инжекция

Описание

Оригинално описание

Roslyn CodeLens MCP Server is a Roslyn-based MCP server providing semantic code intelligence for .NET codebases. From 0.0.9 to 1.17.0, the get_diagnostics MCP tool loads and executes all DiagnosticAnalyzer assemblies referenced by the target solution without any allowlist, signature check, or user confirmation; includeAnalyzers defaults to true, so no explicit opt-in is required. An attacker who can place a malicious .csproj referencing an attacker-controlled DLL in a location the victim opens with the MCP server will achieve arbitrary code execution in the server process with the server's OS privileges. This vulnerability is fixed in 1.17.0.

Засегнати продукти

• MarcelRoozekrans roslyn-codelens-mcp: >= 0.0.9, < 1.17.0

Вид слабост

• CWE-94 Неправилен контрол при генериране на код

История

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-45555
• https://nvd.nist.gov/vuln/detail/CVE-2026-45555
• https://github.com/MarcelRoozekrans/roslyn-codelens-mcp/security/advisories/GHSA-552p-8f74-6x7q