{"id":"CVE-2026-44004","aliases":["GHSA-6785-pvv7-mvg7"],"url":"https://o3.security/vulnerability/CVE-2026-44004","summary":"vm2: Host Process OOM DoS via Buffer.alloc (Timeout Bypass)","details":"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.","published":"2026-05-13T17:31:16.281Z","modified":"2026-08-08T03:30:38.847217451Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"vm2","fixedVersion":"3.11.0"}],"fix":null,"references":[{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44004.json"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:50850"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-44004"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44004.json"},{"type":"ADVISORY","url":"https://github.com/patriksimek/vm2/security/advisories/GHSA-6785-pvv7-mvg7"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44004"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2477195"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-08T03:30:38.847217451Z"}}