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

Summary An untrusted script run by VM.run can construct an embedder-exposed host function that returns a rejected native Promise and ignore the result. The sandbox-to-host construct trap forwards that Promise without applying the host-side rejection handling already used by the neighboring apply...

Arbitrary Code Injection

Overview vm2 is a sandbox that can run untrusted code with whitelisted Node's built-in modules. Affected versions of this package are vulnerable to Arbitrary Code Injection in the handling of rejected host Promises via call or apply indirection. An attacker can execute arbitrary commands with the...

Uncaught Exception

Overview vm2 is a sandbox that can run untrusted code with whitelisted Node's built-in modules. Affected versions of this package are vulnerable to Uncaught Exception in the handling of Promises returned from the host realm into the sandbox. An attacker can cause the host process to terminate...

UBUNTU-CVE-2025-62491

A Use-After-Free UAF vulnerability exists in the QuickJS engine's standard library when iterating over the global list of unhandled rejected promises ts-rejectedpromiselist. The function jsstdpromiserejectioncheck attempts to iterate over the rejectedpromiselist to report unhandled rejections usi...

CVE-2025-62491 Use-after-free in js_std_promise_rejection_check in QuickJS

A Use-After-Free UAF vulnerability exists in the QuickJS engine's standard library when iterating over the global list of unhandled rejected promises ts-rejectedpromiselist. The function jsstdpromiserejectioncheck attempts to iterate over the rejectedpromiselist to report unhandled rejections usi...

PT-2025-42488

Name of the Vulnerable Software and Affected Versions QuickJS affected versions not specified Description A Use-After-Free UAF condition exists in the QuickJS engine’s standard library when processing unhandled rejected promises. The js std promise rejection check function iterates through the...