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Home / Vulnerability Intelligence / CVE-2026-43997

CVE-2026-43997 - Vulnerability Analysis

CriticalCVSS: 10.0

Last Updated: May 14, 2026

vm2 - Sandbox Escape

Published: May 13, 2026Updated: May 14, 2026PoC AvailableRemote Exploitable

Overview

vm2 < 3.11.0 contains a sandbox escape vulnerability caused by access to the host Object, letting attackers escape the sandbox environment, exploit requires crafted code execution within the sandbox.

Severity & Score

Severity: Critical
CVSS Score: 10.0
EPSS Score: 4.8%(Probability of exploitation in next 30 days)

Impact

Attackers can escape the sandbox, potentially executing arbitrary code on the host system.

Mitigation

Update to version 3.11.0 or later.

Social Media Activity(2 posts)

TheHackerWire
TheHackerWire
@thehackerwire
May 13, 2026

šŸ”“ CVE-2026-43997 - Critical (10) vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, it is possible to obtain the host Object. There are various ways to use the host Object, to escape the sandbox, one example would be using HostObject.getOwnPropertySymbols to obtain Sy... šŸ”— https://www.thehackerwire.com/vulnerability/CVE-2026-43997/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack

View original post
TheHackerWire
TheHackerWire
@thehackerwire
May 13, 2026

šŸ”“ CVE-2026-43997 - Critical (10) vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, it is possible to obtain the host Object. There are various ways to use the host Object, to escape the sandbox, one example would be using HostObject.getOwnPropertySymbols to obtain Sy... šŸ”— https://www.thehackerwire.com/vulnerability/CVE-2026-43997/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack

View original post

Details

CVE ID
CVE-2026-43997
Severity
Critical
CVSS Score
10.0
Type
sandbox_escape
Status
confirmed
EPSS
4.8%
Social Posts
2

CWE

  • CWE-94

CVSS Metrics

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS Score

4.8%Probability of exploitation in the next 30 days