CVE-2026-45555

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 getdiagnostics MCP tool loads and executes all DiagnosticAnalyzer assemblies referenced by the target solution without any allowlist, signature check, or user...

CVE-2026-45555 Roslyn CodeLens MCP Server: Untrusted Roslyn Analyzer Execution via get_diagnostics Leads to Arbitrary Code Execution

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 getdiagnostics MCP tool loads and executes all DiagnosticAnalyzer assemblies referenced by the target solution without any allowlist, signature check, or user...

CVE-2026-45555 Roslyn CodeLens MCP Server: Untrusted Roslyn Analyzer Execution via get_diagnostics Leads to Arbitrary Code Execution

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 getdiagnostics MCP tool loads and executes all DiagnosticAnalyzer assemblies referenced by the target solution without any allowlist, signature check, or user...

CVE-2026-45555

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 getdiagnostics MCP tool loads and executes all DiagnosticAnalyzer assemblies referenced by the target solution without any allowlist, signature check, or user...

EUVD-2026-33302

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 getdiagnostics MCP tool loads and executes all DiagnosticAnalyzer assemblies referenced by the target solution without any allowlist, signature check, or user...

CVE-2026-45555

Summary : The Roslyn CodeLens MCP Server (MCP) processes Diagnostics via get_diagnostics, loading all DiagnosticAnalyzer assemblies in the target solution without any allowlist, signature check, or user confirmation. From versions 0.0.9–1.17.0, this enables arbitrary code execution in the MCP ser...

PT-2026-44846

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 use...

Roslyn CodeLens MCP Server 安全漏洞

Roslyn CodeLens MCP Server is a Roslyn-based .NET code library tool for deep semantic analysis, developed by Marcel Roozekrans. Versions of Roslyn CodeLens MCP Server from 0.0.9 to 1.17.0 contain security vulnerabilities. These vulnerabilities stem from the getdiagnostics tool, which loads and...

Codecepticon - .NET Application That Allows You To Obfuscate C#, VBA/VB6 (Macros), And PowerShell Source Code

Codecepticon is a .NET application that allows you to obfuscate C, VBA/VB6 macros, and PowerShell source code, and is developed for offensive security engagements such as Red/Purple Teams. What separates Codecepticon from other obfuscators is that it targets the source code rather than the compil...

dnSpy - .NET Debugger And Assembly Editor

dnSpy is a debugger and .NET assembly editor. You can use it to edit and debug assemblies even if you don't have any source code available. Want to say thanks? Click the star at the top of the page. Or fork dnSpy and send a PR! The following pictures show dnSpy in action. It shows dnSpy editing a...

NET Debugger & Assembly Editor: dnSpy

dnSpy is a tool to reverse engineer .NET assemblies. It includes a decompiler, a debugger and an assembly editor and more and can be easily extended by writing your own extension. It uses dnlib to read and write assemblies so it can handle obfuscated assemblies eg. malware without crashing...

Visual Studio Security Extension: Puma Scan

Visual Studio Security Extension Puma Scan is the leading software security Visual Studio analyzer extension. Built on top of Roslyn, the open-source .NET Compiler Platform, Puma Scan provides real time, continuous source code analysis as development teams write code. Vulnerabilities are...