Description
vm2 versions 3.10.1 through 3.11.6 contain a sandbox escape reachable from a default `new VM()` sandbox when running on Node.js 26. WebAssembly.compileStreaming and WebAssembly.instantiateStreaming can produce a raw host-realm Promise that rejects with a host-realm error object; by controlling Symbol.species via Promise.prototype.finally, sandbox code receives that raw host error, walks from the host error constructor to the host Function constructor, and recovers the real host `process` object, gaining host Node.js capabilities (e.g. access to host modules such as fs) in the context of the process running the sandbox. No NodeVM, require permission, host object injection, or otherwise unsafe configuration is required. This is a bypass of the fix for GHSA-6j2x-vhqr-qr7q, which removed the JSPI entry points WebAssembly.promising and WebAssembly.Suspending. The issue is fixed in 3.11.7.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| patriksimek | vm2 | 3.10.1 – < 3.11.7 | 3.11.7 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
GitHub 1 repository
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AraxyAI/CVE-2026-92956__vm2__test__20261012 ★ 0 · Oct 12, 2026
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | vm2 | >= 3.10.1, < 3.11.7 | 3.11.7 | GHSA-wjwh-qqvp-g4p4 |
Advisories 1
- WID-SEC-2026-1583 vm2: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 27, 2026
References
- GitHub Security Advisory (GHSA-wjwh-qqvp-g4p4) vendor-advisory
- VulnCheck Advisory: vm2 3.10.1 through 3.11.6 Sandbox Escape via WebAssembly.compileStreaming third-party-advisory