Arbitrary Code Injection Affecting roslyncodelens.mcp package, versions [0.0.9,1.17.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DOTNET-ROSLYNCODELENSMCP-17707795
- published30 Jun 2026
- disclosed29 May 2026
- creditUnknown
Introduced: 29 May 2026
CVE-2026-45555 (opens in a new tab)How to fix?
Upgrade RoslynCodeLens.Mcp to version 1.17.0 or higher.
Overview
Affected versions of this package are vulnerable to Arbitrary Code Injection via the get_diagnostics process. An attacker can execute arbitrary code with the server's operating system privileges by placing a malicious .csproj file that references an attacker-controlled DLL in a location accessed by the server.