CVE-2026-47137

Summary (CVE-2026-47137): The vm2 sandbox (NodeVM) had a bypass in versions prior to 3.11.4 where nesting: true with an unspecified require allowed full host RCE. The issue arose because a security check (options.nesting === true && options.require === false) only catches explicit require: false;...

CVE-2026-47137 vm2: GHSA-8hg8-63c5-gwmx patch bypass: nesting:true without explicit require still allows full RCE

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, the fix for GHSA-8hg8-63c5-gwmx CVE-2023-37903 introduced a check in nodevm.js line 263 that blocks the combination nesting: true + require: false. However, the check uses strict equality options.require === false, which is...

GHSA-M4WX-M65X-GHRR vm2 has a CVE-2023-37903 patch bypass: nesting:true without explicit require still allows full RCE

Summary The fix for GHSA-8hg8-63c5-gwmx CVE-2023-37903 introduced a check in nodevm.js line 263 that blocks the combination nesting: true + require: false. However, the check uses strict equality options.require === false, which is trivially bypassed by omitting the require option entirely. When...

vm2 has a CVE-2023-37903 patch bypass: nesting:true without explicit require still allows full RCE

Summary The fix for GHSA-8hg8-63c5-gwmx CVE-2023-37903 introduced a check in nodevm.js line 263 that blocks the combination nesting: true + require: false. However, the check uses strict equality options.require === false, which is trivially bypassed by omitting the require option entirely. When...