by Kastro
Paper/Archive/CVE-2026-44005

CVE-2026-44005

patriksimek vm2 — vm2: Sandbox escape

EPSS 0.8%public exploitCVSS 10.0
critical.is priorityof 100
52
CVSS 10.0 (CNA)10.0 / 10 × 3030.0Not in CISA KEV+300.0EPSS percentile 57.6.576 × 2011.5Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
vm2>= 3.9.6, < 3.11.0–CNA
Red Hat Ansible Automation Platform 2.1see advisory1785854226redhat-SADP
Red Hat Developer Hubsee advisory–redhat-SADP

Scores by source

GitHub_M (CNA)10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
redhat-SADP (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

exploitgithub.com/patriksimek/vm2/security/advisories/GHSA-vwrp-x96c-mhwqrefaccess.redhat.com/security/cve/CVE-2026-44005refbugzilla.redhat.com/show_bug.cgi?id=2477205refsecurity.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44005.jsonadvisoryaccess.redhat.com/errata/RHSA-2026:50850