CVE-2026-43999

CVE-2026-43999 affects vm2’s NodeVM when the builtins allowlist is configured with a wildcard that includes the module builtin. Prior to version 3.11.0, the module builtin can bypass vm2’s allowlist via Module._load, because vm2 exposes the host’s Module object through a readonly proxy that still...

Improper Isolation or Compartmentalization

Overview vm2 is a sandbox that can run untrusted code with whitelisted Node's built-in modules. Affected versions of this package are vulnerable to Improper Isolation or Compartmentalization through the NodeVM constructor in lib/nodevm.js. An attacker can run host commands when the VM is set up...

PT-2026-38389

Name of the Vulnerable Software and Affected Versions vm2 versions prior to 3.11.0 Description 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 the host context. This occurs because...