What’s Vulnerable › Vulnerabilities

CVE-2026-22709: vm2 has a Sandbox Escape

• Severity: critical (CVSS 10.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-01-26 · updated 2026-06-17
• Weakness: CWE-94

Description

vm2 is an open source vm/sandbox for Node.js. In vm2 prior to version 3.10.2, `Promise.prototype.then` `Promise.prototype.catch` callback sanitization can be bypassed. This allows attackers to escape the sandbox and run arbitrary code. In lib/setup-sandbox.js, the callback function of `localPromise.prototype.then` is sanitized, but `globalPromise.prototype.then` is not sanitized. The return value of async functions is `globalPromise` object. Version 3.10.2 fixes the issue.

Affected products

• patriksimek vm2: before 3.10.2 — fixed in 3.10.2

How to fix

Upgrade to a fixed version: patriksimek vm2 3.10.2. Check the vendor advisory for mitigations.

References

• https://github.com/patriksimek/vm2/commit/4b009c2d4b1131c01810c1205e641d614c322a29
• https://github.com/patriksimek/vm2/releases/tag/v3.10.2
• https://github.com/patriksimek/vm2/security/advisories/GHSA-99p7-6v5w-7xg8

Get alerted when CVE-2026-22709 or the next vulnerability affects your stack