{"cve":"CVE-2026-44005","nvd":{"published":"2026-05-13T18:16:17.257","modified":"2026-10-26T17:10:03.270","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H","score":10.0},"cwes":["CWE-94","CWE-1321","CWE-653"],"references":["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","https://github.com/patriksimek/vm2/security/advisories/GHSA-vwrp-x96c-mhwq"],"products":["vm2_project:vm2"],"source":"nvd","synced_at":"2026-10-26T17:39:09.812804557+00:00"},"epss":{"cve":"CVE-2026-44005","score":0.00831,"percentile":0.57332,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-vwrp-x96c-mhwq","url":"https://osv.dev/vulnerability/GHSA-vwrp-x96c-mhwq","summary":"vm2: Mutable Proxies for Host Intrinsic Prototypes Allows Sandbox Escape","modified":"2026-05-14T20:51:08.984891Z","packages":[{"ecosystem":"npm","name":"vm2","purl":"pkg:npm/vm2","ranges":[">=3.9.6 <3.11.0"],"fixed":["3.11.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}