CVE-2026-44005
High
High exploit probability or critical severity with a known exploit.
CVSS base
10.0
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
EPSS — probability of exploitation (30 days)
0.8%
55.6th percentile
CISA KEV
Not listed
Weakness / dates
CWE-653
Published 2026-05-13 · modified 2026-09-07
CVSS breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
| Attack Vector | N | Network |
| Attack Complexity | L | Low |
| Privileges Required | N | None |
| User Interaction | N | None |
| Scope | C | Changed |
| Confidentiality | N | None |
| Integrity | H | High |
| Availability | H | High |
Timeline
- 2026-05-13 — Published (NVD)
- 2026-09-07 — Last modified (NVD)
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
References
- exploit https://github.com/patriksimek/vm2/security/advisories/GHSA-vwrp-x96c-mhwq
- https://access.redhat.com/errata/RHSA-2026:50850
- https://access.redhat.com/security/cve/CVE-2026-44005
- https://bugzilla.redhat.com/show_bug.cgi?id=2477205
- exploit https://github.com/patriksimek/vm2/security/advisories/GHSA-vwrp-x96c-mhwq
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44005.json