CriticalGHSA-g644-9gfx-q4q4CVE-2023-37903

vm2 Sandbox Escape vulnerability

Published 13 Jul 2023 · Updated 8 Jul 2026

Affected package

vm2npm
Affected
<=3.9.19
Fixed in
No fix released

Details

In vm2 for versions up to 3.9.19, Node.js custom inspect function allows attackers to escape the sandbox and run arbitrary code.

Impact

Remote Code Execution, assuming the attacker has arbitrary code execution primitive inside the context of vm2 sandbox.

Patches

None.

Workarounds

None.

References

PoC is to be disclosed on or after the 5th of September.

Similarity with CVE-2023-37466

While this advisory might look similar to CVE-2023-37466, it is a completely different way of escaping the sandbox.

For more information

If you have any questions or comments about this advisory:

  • Open an issue in VM2

Thanks to Xion (SeungHyun Lee) of KAIST Hacking Lab for disclosing this vulnerability.

Is GHSA-g644-9gfx-q4q4 in any of your client repos?

Checking one package by hand is fine. Checking it across forty client projects is not. NPMscan reads the lockfiles in every GitHub repo you pick, finds each project with an affected vm2, and gives you the command that fixes it.

References

Advisory data from OSV.dev (opens OSV.dev in a new tab), refreshed daily.