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[ CVE-2026-92934 · Published 17 Sep 2026 ]

vm2 sandbox escape to host RCE via revisited host-wrapped AggregateError bypassing Error sanitization cycle short-circuit

CVSS 9.0 EPSS <1%Fix available

[ Why it matters ]Priority signals

  • Public proof-of-concept exploit exists (CISA SSVC)
  • Critical severity: CVSS 9.0

[ Description ]Official description

vm2 before 3.11.8 contains an incomplete fix for Error.cause sanitization that allows sandbox escape when revisited host-wrapped AggregateError objects are caught within a single exception handler traversal. Attackers can exploit cycle detection bypass in handleException to access unsanitized host proxies embedded in the errors array, enabling full remote code execution and process information disclosure from the sandbox.

[ Fixes ]Fixes and patches

  • vm2 3.11.8Fixed version · GitHub Advisories · npm package vm2: upgrade to 3.11.8 or later (affected <= 3.11.7)

[ Packages ]Affected open-source packages

[ References ]References