Vulnerability · Published Jan 26, 2026 · Assigned by GitHub_M

CVE-2026-22709vm2 has a Sandbox Escape

Critical 9.8

In plain English

A critical-severity code injection in vm2 from patriksimek. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.3% (higher than 70% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.8Critical

Exploit odds (30 days)1.3%top 30.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	vm2	3.10.2	GHSA-99p7-6v5w-7xg8

Affected products (as reported)

Vendor	Product	Versions
patriksimek	vm2	< 3.10.2

Weakness: CWE-94, CWE-913, CWE-693 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

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