CVE-2026-47139
HighCVSS 8.6Exploitation Probability (EPSS)
Low risk17th percentile - higher than 17% of all known CVEs
Summary
vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, NodeVM allowed excluding public network modules, but underscored internal HTTP modules like _http_client and _http_server were not blocked, enabling HTTP requests despite the exclusion of public modules.
Risk Assessment
Organizations may be exposed to unauthorized network connections from sandboxed code, potentially leading to data leaks or other security threats.
Recommendation
It is recommended to upgrade to version 3.11.4 or later to mitigate this vulnerability and secure the environment against unauthorized access.
Original NVD description (English source)
vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, NodeVM supports excluding public network builtins from the wildcard builtin option. With this configuration direct access to http, https, http2, net, dgram, tls, dns, and dns/promises is blocked. However, Node.js also exposes underscored internal HTTP builtins such as _http_client and _http_server. These are not blocked when the public modules are excluded. Sandboxed code can use these internal builtins to make outbound HTTP requests and open listening HTTP sockets even though the public network modules are denied. This issue has been patched in version 3.11.4.