CVE-2026-43998
High
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.
SeverityHigh
CVSS8.5
Exploit probability—
ProductVm2
PublishedMay 13, 2026
First seenMay 13, 2026
Weakness typeCWE-59Improper link resolution
How to fix
Update
- vm23.11.0 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| vm2_project vm2 | 3.10.5 | — |
| vm2npm | 3.10.5 ≤ v < 3.11.0 | 3.11.0 |
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