SB2026050495 - Multiple vulnerabilities in vm2

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Main Vulnerability Database SB2026050495

SB2026050495 - Multiple vulnerabilities in vm2

Published: May 4, 2026

Security Bulletin ID SB2026050495
CSH Severity
High
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 67% Medium 33%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 vulnerabilities.


1) Improper access control (CVE-ID: N/A)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to improper access control in the vm2 sandbox internal state handling when executing untrusted code. A remote attacker can access the VM2_INTERNAL_STATE_DO_NOT_USE_OR_PROGRAM_WILL_FAIL object to disclose sensitive information.

The issue exposes an internal state object from within the sandbox.


2) Improper Check or Handling of Exceptional Conditions (CVE-ID: CVE-2026-44009)

CWE-ID: CWE-703 - Improper Check or Handling of Exceptional Conditions

CVSSv4: 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


The vulnerability allows a remote attacker to execute arbitrary commands on the host system.

The vulnerability exists due to improper exception handling in handleException when processing exceptions with a null prototype. A remote attacker can throw and catch a crafted sandbox object with a null prototype to execute arbitrary commands on the host system.

Exploitation requires the ability to execute arbitrary code inside the context of a vm2 sandbox.


3) Protection Mechanism Failure (CVE-ID: CVE-2026-44008)

CWE-ID: CWE-693 - Protection Mechanism Failure

CVSSv4: 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


The vulnerability allows a remote attacker to execute arbitrary commands on the host system.

The vulnerability exists due to improper sandbox enforcement in neutralizeArraySpeciesBatch when processing objects from the other side via a getter on the array prototype. A remote attacker can write crafted code in a vm2 sandbox to execute arbitrary commands on the host system.

Exploitation requires the ability to execute arbitrary code inside the context of a vm2 sandbox.


Remediation

Install update from vendor's website.

References