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CVE-2026-22709 is a critical sandbox escape vulnerability in the vm2 library for Node.js affecting versions through 3.10.1. The flaw is caused by incomplete sanitization of Promise callback handling in lib/setup-sandbox.js. vm2 sanitizes callbacks for localPromise.prototype.then, but equivalent handling for globalPromise.prototype.then and Promise.prototype.catch can be bypassed. Because async functions return global Promise objects, attacker-controlled code can reach unsanitized callback paths and break out of the intended isolation boundary. Public reporting also notes the vulnerable implementation used Function.prototype.call in the global Promise handlers, enabling interception that bypasses ensureThis-style sanitization and exposes host objects to sandboxed code. Once a host object is obtained, the attacker can traverse constructor chains to recover the host Function constructor and execute arbitrary code outside the sandbox.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
60 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Related vm2 vulnerability mentioned as another example of the same root weakness class affecting dynamically managed code resources.
A prior critical vm2 sandbox escape vulnerability described as a Promise callback bypass, mentioned for comparison as part of a broader wave of vm2 flaws.
A prior vm2 sandbox escape vulnerability involving promise callback bypass, mentioned as historical context.
A separate vm2 vulnerability referenced for comparison as a direct arbitrary code execution issue.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.