Thursday, 29 October 2026
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CVE-2026-81096: ToolUniverse sandbox escape and unauthenticated RCE

ToolUniverse's Python code executor allowed sandbox escape through dunder attribute access, and exposed HTTP/MCP servers with no authentication enabled remote code execution as the server process.

Disclosed 27 August 2026 · Record updated 1 October 2026

Impact

Unauthenticated remote code execution on exposed servers running ToolUniverse versions prior to 1.3.0.

Our coverage

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Sources

  1. nvd.nist.govhttps://nvd.nist.gov/vuln/detail/CVE-2026-81096