CVE-2026-47683 vm2: bufferAllocLimit cap bypassed by Buffer.concat and Buffer.from arrayLike

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.concatlist, totalLength or Buffer.fromarrayLike with an attacker-controlled length, allowing sandbox code to perform large synchronous host external-memory...

EUVD-2026-60461

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.concatlist, totalLength or Buffer.fromarrayLike with an attacker-controlled length, allowing sandbox code to perform large synchronous host external-memory...

NPM: vm2 has Memory Exhaustion DoS via bufferAllocLimit Bypass

NPM: vm2 has Memory Exhaustion DoS via bufferAllocLimit Bypass vulnerability discovered by ? in WordPress Npm vm2 versions = 3.11.5...

GHSA-V836-6XW4-9CX3 vm2 has Memory Exhaustion DoS via bufferAllocLimit Bypass

Summary: The bufferAllocLimit defense GHSA-6785-pvv7-mvg7 can be completely bypassed using ArrayBuffer, SharedArrayBuffer, or any TypedArray constructor. These allocate identical host-process RSS through the same V8/libuv C++ allocation path as Buffer.alloc but are not subject to the size cap...