CVE-2026-45555 - CERT CVE
ID CVE-2026-45555
Sažetak 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.
Reference
CVSS
Base: 7.8
Impact: 5.9
Exploitability:1.8
Pristup
VektorSloženostAutentikacija
LOCAL LOW NONE
Impact
PovjerljivostCjelovitostDostupnost
HIGH HIGH HIGH
CVSS vektor CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Zadnje važnije ažuriranje 01-06-2026 - 18:43
Objavljeno 29-05-2026 - 14:16