Description
vm2 is an open source vm/sandbox for Node.js. From 3.9.6 to 3.10.5, vm2's bridge exposes mutable proxies for real host-realm intrinsic prototypes and then forwards sandbox writes into the underlying host objects with otherReflectSet() and otherReflectDefineProperty(), which lets attacker-controlled JavaScript running in a default VM or inherited NodeVM mutate shared host Object.prototype, Array.prototype, and Function.prototype from inside the sandbox This vulnerability is fixed in 3.11.0.
Affected products
vm2_project: vm2
References6
- github.com/patriksimek/vm2/security/advisories/GHSA-vwrp-x96c-m… ExploitVendor Advisory
- github.com/patriksimek/vm2/security/advisories/GHSA-vwrp-x96c-m… ExploitVendor Advisory
- access.redhat.com/errata/RHSA-2026:50850
- access.redhat.com/security/cve/CVE-2026-44005
- bugzilla.redhat.com/show_bug.cgi?id=2477205
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44005…
Metrics
- CVSS 3.1
-
10.0
CRITICAL
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H - EPSS — exploit probability
- 1% percentile: 58 · as of 14 November 2026
- CWE
- CWE-94CWE-1321CWE-653
Could this be exploited in your environment?
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