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 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.

• CWE-94

• https://github.com/MarcelRoozekrans/roslyn-codelens-mcp/security/advisories/GHSA-552p-8f74-6x7q
• https://github.com/MarcelRoozekrans/roslyn-codelens-mcp/security/advisories/GHSA-552p-8f74-6x7q

Published

May 29, 2026

Last Modified

Jul 21, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-4555A weakness has been identified in D-Link DIR-513 1.10. The i…8.8
• CVE-2026-45550Roxy-WI is a web interface for managing Haproxy, Nginx, Apac…9.1
• CVE-2026-45551Group-Office is an enterprise customer relationship manageme…5.1
• CVE-2026-45552Roxy-WI is a web interface for managing Haproxy, Nginx, Apac…9.9
• CVE-2026-45553NiceGUI is a Python-based UI framework. Prior to version 3.1…7.5
• CVE-2026-45554NiceGUI is a Python-based UI framework. Prior to version 3.1…5.3
• CVE-2026-45556Roxy-WI is a web interface for managing Haproxy, Nginx, Apac…9.9
• CVE-2026-45557Technitium DNS Server aggressively tries to fetch missing RR…6.9
• CVE-2026-45558Roxy-WI is a web interface for managing Haproxy, Nginx, Apac…9.9
• CVE-2026-45559Roxy-WI is a web interface for managing Haproxy, Nginx, Apac…4.9
• CVE-2026-45560Roxy-WI is a web interface for managing Haproxy, Nginx, Apac…6.1
• CVE-2026-45561Roxy-WI is a web interface for managing Haproxy, Nginx, Apac…6.5