CVE-2026-44003

vm2 (Node.js sandbox) prior to version 3.11.0 includes a transformer fast-path that bypasses AST analysis when code does not contain catch, import, or async, allowing sandboxed code to access internal state VM2_INTERNAL_STATE_DO_NOT_USE_OR_PROGRAM_WILL_FAIL and its security helpers (handleExcepti...

CVE-2026-44003 vm2: Transformer Fast-Path Bypass Exposes Internal State Variable

vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, vm2's code transformer has a performance optimization that skips AST analysis when the code does not contain catch, import, or async keywords. This fast-path bypass allows sandboxed code to directly access the internal...

GHSA-WP5R-2GW5-M7Q7 vm2's Transformer Fast-Path Bypass Exposes Internal State Variable

Summary vm2's code transformer has a performance optimization that skips AST analysis when the code does not contain catch, import, or async keywords. This fast-path bypass allows sandboxed code to directly access the internal VM2INTERNALSTATEDONOTUSEORPROGRAMWILLFAIL variable, which exposes...