GHSA-v836-6xw4-9cx3: vm2 has Memory Exhaustion DoS via bufferAllocLimit Bypass

August 17, 2026

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.

References

github.com/advisories/GHSA-v836-6xw4-9cx3
github.com/patriksimek/vm2/releases/tag/3.11.6
github.com/patriksimek/vm2/security/advisories/GHSA-v836-6xw4-9cx3

Code Behaviors & Features

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