{"cve":"CVE-2026-44008","nvd":{"published":"2026-05-13T18:16:17.667","modified":"2026-10-26T17:10:03.270","status":"Modified","description":"vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.2, the new method neutralizeArraySpeciesBatch works with objects from the other side but can call into this side via getter on the array prototype exposing objects of the wrong side into the sandbox. This can be used to get host objects and get the host Function object. This allows attackers to write code which can escape from the VM2 sandbox and execute arbitrary commands on the host system. This vulnerability is fixed in 3.11.2.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-668","CWE-1100"],"references":["https://github.com/patriksimek/vm2/security/advisories/GHSA-9qj6-qjgg-37qq","https://access.redhat.com/errata/RHSA-2026:50850","https://access.redhat.com/security/cve/CVE-2026-44008","https://bugzilla.redhat.com/show_bug.cgi?id=2477201","https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44008.json"],"products":["vm2_project:vm2"],"source":"nvd","synced_at":"2026-10-26T17:39:09.812804557+00:00"},"epss":{"cve":"CVE-2026-44008","score":0.00851,"percentile":0.57939,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-9qj6-qjgg-37qq","url":"https://osv.dev/vulnerability/GHSA-9qj6-qjgg-37qq","summary":"vm2 has sandbox breakout via `neutralizeArraySpeciesBatch`","modified":"2026-05-14T20:49:58.689952Z","packages":[{"ecosystem":"npm","name":"vm2","purl":"pkg:npm/vm2","ranges":["<3.11.2"],"fixed":["3.11.2"]}]}],"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."]}