Node.js CVE-2026-22709
CRITICAL
GHSA-99p7-6v5w-7xg8
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
4Blast Radius
ecosystem impact- 13 npm packages depend on vm2 (3 direct, 10 indirect)
Ecosystem-wide dependent count for version 3.10.2.
DescriptionGitHub Advisory
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.
AnalysisAI
Sandbox escape in vm2 Node.js sandbox before 3.10.2 via Promise.prototype.then/catch callback sanitization bypass. PoC and patch available.
Technical ContextAI
CWE-94 in vm2's Promise sanitization. The then() and catch() callback handling doesn't properly restrict access to the host environment.
RemediationAI
Update to vm2 3.10.2.
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Same weakness CWE-94 – Code Injection
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External POC / Exploit Code
Leaving vuln.today