Improper access control in vm2 - CVE-2026-24118
Published: May 4, 2026
Vulnerability identifier: #VU129597
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-24118
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Patrik Simek
Affected software:
vm2
vm2
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the host system.
The vulnerability exists due to improper access control in the vm2 sandbox boundary handling of the __lookupGetter__ method when executing untrusted code inside a vm2 sandbox. A remote attacker can invoke host-context methods through Buffer.apply and retrieve the host Function constructor to execute arbitrary code on the host system.
Exploitation requires the ability to run arbitrary code within the context of a vm2 sandbox.
How to mitigate CVE-2026-24118
Install security update from vendor's website.