vm2 NodeVM builtin denylist bypass via process and inspector/promises
CVE-2026-47140 is a sandbox escape vulnerability in the vm2 Node.js sandbox library affecting versions prior to 3.11.4. In NodeVM, several dangerous Node.js builtins were intended to be blocked by a denylist, including module, worker_threads, cluster, vm, repl, and inspector. However, the denylist omitted the process builtin and inspector/promises. Because these builtins remained reachable from sandboxed code, an attacker running untrusted JavaScript inside NodeVM could access host-side execution primitives and bypass the intended builtin restrictions. The result is escape from the sandbox boundary and execution of code in the host process.
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Recent activity
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Every observed campaign linking this CVE to a named adversary.
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YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.