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[ CVE-2026-92947 · Published 17 Sep 2026 ]

vm2: Sandboxed code can read and write host-realm memory via Node's shared Buffer pool

CVSS 10.0 EPSS <1%Fix available

[ Why it matters ]Priority signals

  • Public proof-of-concept exploit exists (CISA SSVC)
  • Critical severity: CVSS 10.0

[ Description ]Official description

vm2 before 3.11.7 exposes Node's shared Buffer pool to sandboxed code, allowing disclosure of host memory used by Buffer.from, Buffer.concat, and related allocations. Sandboxed code can read and write to host-realm buffers by acquiring ArrayBuffers from small allocations, leading to sensitive data exposure and potential denial-of-service.

[ Fixes ]Fixes and patches

  • vm2 3.11.7Fixed version · GitHub Advisories · npm package vm2: upgrade to 3.11.7 or later (affected <= 3.11.6)

[ Packages ]Affected open-source packages

[ References ]References