Medium severity · published Jun 12, 2026
CVE-2026-47141
vm2: NodeVM observability builtins leak host process and HTTP request data
6.9
CVSS
0.4%
EPSS
No
On KEV
Description
vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, NodeVM exposes some process-wide observability builtins when they are allowed through require.builtin. The diagnostics_channel, async_hooks, and perf_hooks builtins are not blocked by the dangerous builtin denylist. These modules are process-wide, not sandbox-local. Sandboxed code can use them to observe host application data across the vm2 boundary. This issue has been patched in version 3.11.4.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 32% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VM
vm2 · patriksimek
< 3.11.4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-47141
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-47141
github.com
https://github.com/patriksimek/vm2/commit/e1c48fce05189f48e71efbd32af0754efa4066bb
github.com
https://github.com/patriksimek/vm2/releases/tag/v3.11.4
github.com
https://github.com/patriksimek/vm2/security/advisories/GHSA-9g8x-92q2-p28f
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