Improper Isolation or Compartmentalization Affecting org.webjars.npm:vm2 package, versions [0,]
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-JAVA-ORGWEBJARSNPM-16439007
- published7 May 2026
- disclosed7 May 2026
- creditfasrm
Introduced: 7 May 2026
CVE-2026-44000 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
org.webjars.npm:vm2 is a sandbox that can run untrusted code with whitelisted Node's built-in modules.
Affected versions of this package are vulnerable to Improper Isolation or Compartmentalization through the globalPromise.prototype.then onFulfilled wrapper in the Promise bridge. An attacker can supply a host Promise that resolves to an unmapped host object, such as an Object.create(null) instance or another host-realm class vm2 does not proto-map, and then invoke .then() from the sandbox to receive that object unwrapped. If the resolved value contains attacker-controlled methods, those methods execute in the host realm without passing through the bridge, allowing the attacker to run host-side code and break the isolation expected by the user.