CVE-2026-43999

CRITICAL(9.9)

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Risk Signal Score25/100 — MITTEL

CVSS 9.9 — Kritisch

EPSS-Score

Exploit-Wahrscheinlichkeit (30 Tage)

CVSS Score

9.9

Technische Schwere

Beschreibung

vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, NodeVM's builtin allowlist can be bypassed when the module builtin is allowed (including via the '*' wildcard). The module builtin exposes Node's Module._load(), which loads any module by name directly in the host context, completely bypassing vm2's builtin restriction. This allows sandboxed code to load excluded builtins like child_process and achieve remote code execution. This vulnerability is fixed in 3.11.0.

GitHub Advisories

GHSA-947f-4v7f-x2v8CRITICAL

vm2 has a NodeVM builtin allowlist bypass via `module` builtin's `Module._load` that allows sandbox escape

npm/vm2→ 3.11.0

GitHub Advisory

Referenzen

https://github.com/patriksimek/vm2/security/advisories/GHSA-947f-4v7f-x2v8
https://access.redhat.com/security/cve/CVE-2026-43999
https://bugzilla.redhat.com/show_bug.cgi?id=2477196
https://github.com/patriksimek/vm2/security/advisories/GHSA-947f-4v7f-x2v8
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43999.json