Protection Mechanism Failure in vm2 - CVE-2026-24120
Published: May 4, 2026
Vulnerability identifier: #VU129596
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-2026-24120
CWE-ID: CWE-693
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 commands on the host system.
The vulnerability exists due to improper sandbox enforcement in the Promise species handling logic when processing attacker-controlled code inside a vm2 sandbox. A remote attacker can overwrite built-in functions to escape the sandbox and execute arbitrary commands on the host system.
Exploitation requires the ability to run arbitrary code inside the context of a vm2 sandbox.
How to mitigate CVE-2026-24120
Install security update from vendor's website.