vm2: Sandbox escape
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 10epss 0.8%
exploitation probability
0.8%top 46% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
Affected products
patriksimek · vm2References
https://access.redhat.com/errata/RHSA-2026:50850https://access.redhat.com/security/cve/CVE-2026-44005https://bugzilla.redhat.com/show_bug.cgi?id=2477205https://github.com/patriksimek/vm2/security/advisories/GHSA-vwrp-x96c-mhwqhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44005.json