CVE-2026-100722

A flaw was found in vm2. An attacker who can execute untrusted code within the sandbox can trigger an unhandled error by instantiating host-provided functions that return a rejected asynchronous operation Promise. Due to missing error handling in the sandbox-to-host object construction trap, the...

Duplicate Advisory: vm2: Host Promise rejection from an exposed constructor can terminate the vm2 host process

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-2v2p-6j97-cjg9. This link is maintained to preserve external references. Original Description vm2 before 3.12.2 does not apply host-side Promise rejection handling in the sandbox-to-host construct trap. In...

CVE-2026-100722

vm2 before 3.12.2 does not apply host-side Promise rejection handling in the sandbox-to-host construct trap. In BaseHandler, the apply trap calls markHostPromiseHandled on the returned value, but the adjacent construct path returns the result of Reflect.construct without the same sanitization. If...