p PatchFirst

CVE-2026-43998

CVE-2026-43998 · vm2: NodeVM require.root bypass via symlink traversal allows sandbox escape

This page contains facts from public vulnerability sources. Check the original advisory before updating.

vm2 is an open source vm/sandbox for Node.js. In 3.10.5, NodeVM's require.root path restriction can be bypassed using filesystem symlinks, allowing sandboxed code to load modules from outside the allowed root directory in host context. Because path validation uses path.resolve() (which does not dereference symlinks) but module loading uses Node's native require() (which does), an attacker can load arbitrary host-realm modules and achieve remote code execution. This vulnerability is fixed in 3.11.0.

CVSS 8.5 · High · EPSS 0.7% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • vm2

    Versions
    • 3.10.5: Affected

    No fix published

  • vm2 npm

    Versions
    • 3.10.5
    Affected ranges
    • SEMVER: ≥ 3.10.5, < 3.11.0

    Update to 3.11.0

Original sources

Check your server →