CVE-2026-44001 vm2: Sandbox Escape via Promise Constructor Unhandled Rejection (Process Crash DoS)

What is CVE-2026-44001?

CVE-2026-44001 is a high-severity vulnerability in patriksimek vm2, published on 13 May 2026.

Official description

vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, a sandbox escape vulnerability in vm2 v3.10.5 allows any sandboxed code to crash the host Node.js process via a single Promise constructor that triggers an unhandled rejection propagating to the host. The fix for CVE-2026-22709 (v3.10.2) only sanitized the onRejected callback in .then() and .catch() overrides and did not address the executor-to-unhandledRejection path. This vulnerability is fixed in 3.11.0.

Weakness: CWE-248

Which versions are affected by CVE-2026-44001?

2 open source packages ship an affected version, including vm2. It affects 1 product.

Products include Vm2 Project Vm2.

How do I fix CVE-2026-44001?

Upgrade vm2 to 3.11.0 or later.

Is CVE-2026-44001 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-44001 exists.

Other vulnerabilities in patriksimek vm2

• CVE-2026-43997 vm2: Sandbox Escape Critical 10.0
• CVE-2026-44005 vm2: Sandbox escape Critical 10.0
• CVE-2026-44006 vm2: Sandbox Escape Critical 10.0
• CVE-2023-29017 vm2 Sandbox Escape vulnerability Critical 10.0
• CVE-2022-36067 vm2 vulnerable to Sandbox Escape before v3.9.11 Critical 10.0

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-hw58-p9xv-2mjh, ROOT-APP-NPM-CVE-2026-44001.