CVE-2026-44005
vm2: Sandbox escape
- State
- Published
- Severity
- 10.0 Critical
- Published
- May 13, 2026
- Updated
- Sep 7, 2026
- Reserved
- May 4, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 10.0 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H | GitHub_M |
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | redhat-SADP |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
vm2patriksimek |
|
References
- https://github.com/patriksimek/vm2/security/advisories/GHSA-vwrp-x96c-mhwq
- https://access.redhat.com/security/cve/CVE-2026-44005vdb-entry
- RHBZ#2477205issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44005.json
- https://access.redhat.com/errata/RHSA-2026:50850vendor-advisory
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