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.
References (1)
Core 1
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/patriksimek/vm2/security/advisories/GHSA-vwrp-x96c-mhwq
Scores
CVSS v3
10.0
EPSS
0.0011
EPSS Percentile
28.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
total
Details
CWE
CWE-1321
CWE-94
Status
published
Products (3)
npm/vm2
3.9.6 - 3.11.0npm
patriksimek/vm2
>= 3.9.6, < 3.11.0
vm2_project/vm2
3.9.6 - 3.11.0
Published
May 13, 2026
Tracked Since
May 13, 2026