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Five advisories closed. Patch release — no API changes for valid configurations.
What's Changed
Security fixes
GHSA-cfcw-xp6x-25gj — Stacked-indirection bypass of the GHSA-v6mx-mf47-r5wg apply-trap peel. Two layers of Function.prototype.{call,apply,bind} pushed the host prototype mutator out of the inspected position; a later variant ran the __proto__ setter entirely host-side, defeating both identity checks (RCE).
GHSA-gmc2-2x9w-cgh9 — bufferAllocLimit bypass via Buffer.concat(list, totalLength) and Buffer.from(arrayLike), which reach the host allocator without traversing the sandbox-side wrapper — one call allocates past a configured cap (host memory-exhaustion DoS).
GHSA-m283-3h24-438v — Host errors leaked live host references into sandbox catch blocks via Error.cause, the SuppressedError / AggregateError slots, arbitrary own properties (err.detail = process), and the carrier's prototype chain. Any embedder function throwing an error that carried a host reference was an escape (RCE).
GHSA-m5w8-4gq2-6f8x — NodeVM builtin: ['*'] exposed os and dns, the last two process-wide builtins. Both leak host identity and network topology, and both write host state: dns.setServers() hijacks the host's DNS resolver, os.setPriority() renices the host process.
GHSA-v836-6xw4-9cx3 — bufferAllocLimit bypass via ArrayBuffer, SharedArrayBuffer, every TypedArray constructor, and WebAssembly.Memory, which hit the same timeout-immune V8 allocator uncapped — a ~200-byte payload becomes gigabytes of host RSS (host memory-exhaustion DoS).
Upgrade Notes
builtin: ['*'] users depending on os or dns — both are now denied, along with node:os, node:dns and dns/promises. Re-introduce a safe subset via require.mock / require.override.
Finite bufferAllocLimit users — the cap now also covers Buffer.concat / from / copyBytesFrom and the ArrayBuffer / SharedArrayBuffer / TypedArray / WebAssembly.Memory constructors. The default Infinity is unaffected.
Host errors now reach sandbox catch blocks as sandbox-realm errors. Primitive diagnostics are preserved and instanceof now works for subclasses; non-primitive properties and the host prototype chain are gone by design.
Five advisories closed. Patch release — no API changes for valid configurations.
Security fixes
GHSA-cfcw-xp6x-25gj — stacked-indirection bypass of the GHSA-v6mx-mf47-r5wg apply-trap peel: the peel inspected one layer of Function.prototype.{call,apply,bind} indirection, so two layers slipped the host prototype mutator past it, and a follow-up variant laundered the severance entirely host-side. Closed at two independent chokepoints — lib/bridge.js refuses to deliver host prototype mutators, and both it and handleException reject any host object whose prototype chain reaches null without passing through the sandbox Object.prototype. See ATTACKS.md Category 37 and test/ghsa/GHSA-cfcw-xp6x-25gj/.
GHSA-gmc2-2x9w-cgh9 — bufferAllocLimit (GHSA-6785-pvv7-mvg7) bypass via Buffer.concat(list, totalLength) and Buffer.from(arrayLike), whose host implementations reach the C++ allocator without traversing the sandbox-side allocUnsafe wrapper. lib/setup-sandbox.js now caps concat, from, and copyBytesFrom, and a fail-closed enumeration of host.Buffer's own keys turns any future uncapped allocator into an explicit error rather than a silent bypass. See ATTACKS.md Category 23 (extended) and test/ghsa/GHSA-gmc2-2x9w-cgh9/.
GHSA-m283-3h24-438v — host errors leaked live host references into sandbox catch blocks through four channels: Error.cause, the SuppressedError / AggregateError sub-error slots, arbitrary own properties (err.detail = process), and — beyond the reach of own-key enumeration — the carrier's own prototype chain. handleException now seals the spec-defined slots and rebuilds every host-wrapped carrier as a fresh sandbox-realm error carrying only its primitive properties, discarding the host prototype chain entirely. See ATTACKS.md Category 38 and test/ghsa/GHSA-m283-3h24-438v/.
GHSA-m5w8-4gq2-6f8x — sibling of GHSA-9g8x: NodeVM builtin: ['*'] still surfaced os and dns, the last two process-wide builtins. Beyond host-identity and network-topology reads, both carry writes reachable in one line of sandbox code — dns.setServers() hijacks the host's DNS resolver, os.setPriority() renices the host process. lib/builtin.js adds both to DANGEROUS_BUILTINS, covering node: spellings and dns/promises automatically. See ATTACKS.md Category 35 (extended) and test/ghsa/GHSA-m5w8-4gq2-6f8x/.
GHSA-v836-6xw4-9cx3 — bufferAllocLimit bypass via ArrayBuffer / SharedArrayBuffer / TypedArray / WebAssembly.Memory, which reach the same synchronous, timeout-immune V8 backing-store allocator uncapped. When a finite limit is set, lib/setup-sandbox.js wraps each constructor with a construct trap capping the ToIndex-coerced byte count, and pins prototype.constructor so the uncapped intrinsic cannot be recovered by a constructor walk. The default Infinity leaves them untouched. See ATTACKS.md Category 36 and test/ghsa/GHSA-v836-6xw4-9cx3/.
Upgrade notes
If you use NodeVM({ require: { builtin: ['*'] } }) and depend on os or dns, those two builtins are now denied (GHSA-m5w8-4gq2-6f8x), together with node:os, node:dns, and dns/promises. They join the process-wide class closed in 3.11.4: they expose host-process identity and network topology, and dns.setServers() / dns.setDefaultResultOrder() / os.setPriority() are outright writes to host-process state. Embedders needing a sandbox-local subset (typically os.platform(), os.EOL, os.constants) should register a controlled wrapper via require.mock or require.override.
If you set a finite bufferAllocLimit, the cap now also covers Buffer.concat, Buffer.from, Buffer.copyBytesFrom, and the ArrayBuffer / SharedArrayBuffer / TypedArray / WebAssembly.Memory constructors (GHSA-gmc2-2x9w-cgh9, GHSA-v836-6xw4-9cx3). Sandbox code that previously allocated past the cap through those paths now gets the same RangeError. The default bufferAllocLimit: Infinity leaves every one of them untouched, so this is a no-op unless you opted into the cap.
Errors thrown by embedder-exposed host functions now reach sandbox catch blocks as sandbox-realm errors rather than proxies of the host error (GHSA-m283-3h24-438v). Primitive diagnostics (message, name, stack, code, errno, syscall, path, …) are preserved and error subclasses (TypeError, RangeError, …) now satisfy instanceof correctly inside the sandbox; non-primitive properties, and anything reachable through the error's prototype chain, are gone by design.
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☁️ Nx Cloud last updated this comment at 2026-08-18 21:34:52 UTC
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Bumps the security-updates group with 1 update in the /packages/shopify directory: vm2.
Updates
vm2from 3.11.5 to 3.11.6Release notes
Sourced from vm2's releases.
Changelog
Sourced from vm2's changelog.
Commits
a5b31cdci: pin the compilers job to TypeScript 63dffc8ftest(GHSA-v836-6xw4-9cx3): raise the timeout on the documented-residual casea1cf31dchore(deps-dev): refresh lockfile, clearing all dev-dependency advisoriesb76dd7dchore: bump to 3.11.6 and cut the release section7e3faaffix(GHSA-m283-3h24-438v): sanitize host error carriers reaching the sandboxa85acb6fix(GHSA-cfcw-xp6x-25gj): refuse host prototype mutators and severed host val...c950166fix(GHSA-v836-6xw4-9cx3): cap ArrayBuffer/TypedArray/WebAssembly.Memory under...3ffb315fix(GHSA-gmc2-2x9w-cgh9): close bufferAllocLimit bypass via concat / from / c...768bcfcfix(GHSA-m5w8-4gq2-6f8x): deny os and dns NodeVM builtins5e0f255feat: add maintainer skill governing the security advisory queueDependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
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