{"id":"CVE-2026-47683","revision":"bc2215003d5b4f05bf808458c5238902","records":[{"revision":"bc2215003d5b4f05bf808458c5238902","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-47683","aliases":[],"title":"vm2: bufferAllocLimit cap bypassed by Buffer.concat and Buffer.from arrayLike","description":"vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.6, the bufferAllocLimit enforcement in lib/setup-sandbox.js does not cover Buffer.concat(list, totalLength) or Buffer.from(arrayLike) with an attacker-controlled length, allowing sandbox code to perform large synchronous host external-memory allocations that bypass the configured cap and can exhaust the host process. This issue is fixed in version 3.11.6.","state":0,"publishedAt":"2026-08-17T20:55:32.019+00:00","modifiedAt":"2026-08-18T15:38:37.608+00:00","affected":[{"ecosystem":"Vendor product","name":"vm2","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"patriksimek\",\n                    \"product\": \"vm2\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 3.11.6\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":8.7,"severity":"HIGH"}],"references":["https://github.com/patriksimek/vm2/security/advisories/GHSA-gmc2-2x9w-cgh9","https://github.com/patriksimek/vm2/commit/3ffb315512e634cf85c447375e85d6c83d00a4bd","https://github.com/patriksimek/vm2/releases/tag/3.11.6"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-47683","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-47683","identifiers":["CVE-2026-47683"]},"retained":false,"historicalAffected":[]}],"coverage":[]}