{"cve":"CVE-2026-44004","nvd":{"published":"2026-05-13T18:16:17.123","modified":"2026-10-26T17:10:03.270","status":"Modified","description":"vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, sandboxed code can call Buffer.alloc() with an arbitrary size to allocate memory directly on the host heap. Because Buffer.alloc is a synchronous C++ native call, vm2's timeout option cannot interrupt it. A single request can exhaust host memory and crash the process with a FATAL ERROR: Reached heap limit. 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:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-770","CWE-1285"],"references":["https://github.com/patriksimek/vm2/security/advisories/GHSA-6785-pvv7-mvg7","https://access.redhat.com/errata/RHSA-2026:50850","https://access.redhat.com/security/cve/CVE-2026-44004","https://bugzilla.redhat.com/show_bug.cgi?id=2477195","https://github.com/patriksimek/vm2/security/advisories/GHSA-6785-pvv7-mvg7"],"products":["vm2_project:vm2"],"source":"nvd","synced_at":"2026-10-26T17:39:09.812804557+00:00"},"epss":{"cve":"CVE-2026-44004","score":0.00419,"percentile":0.35917,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-6785-pvv7-mvg7","url":"https://osv.dev/vulnerability/GHSA-6785-pvv7-mvg7","summary":"vm2 Sandbox Access to Host Buffer.alloc Allows timeout Bypass Resulting in Memory Exhaustion","modified":"2026-05-14T20:48:47.342712Z","packages":[{"ecosystem":"npm","name":"vm2","purl":"pkg:npm/vm2","ranges":["<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."]}