Improper handling of exceptional conditions in vm2 - #VU130927
Published: May 11, 2026
Vulnerability identifier: #VU130927
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: N/A
CWE-ID: CWE-755
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 exception handling in the vm2 sandbox when processing async generator control flow with the yield* expression and generator return handling. A remote attacker can execute crafted code inside a vm2 sandbox to execute arbitrary code on the host system.
Exploitation requires the ability to run arbitrary code within the context of a vm2 sandbox.
Remediation
Install security update from vendor's website.