exploit · Thu 01 Oct 2026 · 15:36 UTC
GHSA-8686-vhfx-7r3j: vm2: NodeVM node:-prefixed negative builtin deny bypass exposes child_process
Filed UTCSource GTH ↗
NodeVM normalizes node:-prefixed builtin specifiers during require() resolution, but it does not normalize user-provided negative builtin entries in wildcard policy. As a result, this configuration: ``js new NodeVM({ require: { builtin: ['*', '-node:child_process'] } }); ` does not deny the canonical child_process builtin. Sandboxed code can require both child_process and node:child_process, and receives the host module with process-spawning APIs such as execSync and spawn`. The safe proof below only checks module and function reachability. …
Signals
as the pipeline stamped them- High
- Critical vulnerability — CVSS 9.9
- What to do
- Critical severity — schedule an urgent patch.
CVE
KEV from CISA · EPSS from FIRST| Id | KEV | EPSS | Reference |
|---|---|---|---|
| CVE-2026-92957 | — | 0.54% | NVD ↗ |
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