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CVE-2026-47208 is a critical sandbox escape vulnerability in the vm2 sandboxing library for Node.js affecting versions up to and including 3.11.3. The flaw is caused by improper handling of JavaScript Promise species behavior in vm2's local Promise implementation, specifically a missing reset of Promise species state before invoking the host Promise.prototype.then path. By controlling Symbol.species on a Promise constructor, attacker-supplied code running inside the sandbox can influence downstream Promise construction, obtain a host-origin error object that is not safely wrapped by the sandbox, and then pivot to host-side constructors. This breaks the intended isolation boundary and enables arbitrary command execution on the underlying host system from code that should have remained confined to the vm2 sandbox.
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No public exploit code observed for this vulnerability.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A sandbox breakout vulnerability in vm2 for Node.js that allows attackers to escape the VM2 sandbox and execute arbitrary commands on the host system. It affects versions prior to 3.11.4.
A critical vm2 Node.js sandbox escape vulnerability caused by a missing resetPromiseSpecies(this) call, allowing attackers to hijack Promise species handling and achieve arbitrary command execution on the host.
A critical vm2 sandbox escape caused by improper handling of Promise species definitions, enabling extraction of host error objects and remote code execution.
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.