CVE WatchJul 15, 2026

CVE-2026-43998

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, a

CVSS

8.5

High

EPSS

0.7%

p50

KEV

—

Exploit Today

0-100

Published: May 13, 2026 · Last modified: Jul 15, 2026 · CWE-59

EPSS · 30d

0.7%EPSS · 30 days0.7%

2026-06-302026-07-16

Technical description

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.

Official references

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