CVE-2026-44003
vm2: Transformer Fast-Path Bypass Exposes Internal State Variable
Description
vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, vm2's code transformer has a performance optimization that skips AST analysis when the code does not contain catch, import, or async keywords. This fast-path bypass allows sandboxed code to directly access the internal VM2_INTERNAL_STATE_DO_NOT_USE_OR_PROGRAM_WILL_FAIL variable, which exposes internal security functions (handleException, wrapWith, import). This vulnerability is fixed in 3.11.0.
INFO
Published Date :
May 13, 2026, 6:16 p.m.
Last Modified :
May 14, 2026, 3:22 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update vm2 to version 3.11.0 or later.
- Verify the update addresses the vulnerability.
- Review access controls for internal state.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-44003.
| URL | Resource |
|---|---|
| https://github.com/patriksimek/vm2/security/advisories/GHSA-wp5r-2gw5-m7q7 | Exploit Mitigation Vendor Advisory |
| https://github.com/patriksimek/vm2/security/advisories/GHSA-wp5r-2gw5-m7q7 | Exploit Mitigation Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-44003 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-44003
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-44003 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-44003 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
May. 14, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N Added CPE Configuration OR *cpe:2.3:a:vm2_project:vm2:*:*:*:*:*:node.js:*:* versions up to (excluding) 3.11.0 Added Reference Type CISA-ADP: https://github.com/patriksimek/vm2/security/advisories/GHSA-wp5r-2gw5-m7q7 Types: Exploit, Mitigation, Vendor Advisory Added Reference Type GitHub, Inc.: https://github.com/patriksimek/vm2/security/advisories/GHSA-wp5r-2gw5-m7q7 Types: Exploit, Mitigation, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
May. 13, 2026
Action Type Old Value New Value Added Reference https://github.com/patriksimek/vm2/security/advisories/GHSA-wp5r-2gw5-m7q7 -
New CVE Received by [email protected]
May. 13, 2026
Action Type Old Value New Value Added Description vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, vm2's code transformer has a performance optimization that skips AST analysis when the code does not contain catch, import, or async keywords. This fast-path bypass allows sandboxed code to directly access the internal VM2_INTERNAL_STATE_DO_NOT_USE_OR_PROGRAM_WILL_FAIL variable, which exposes internal security functions (handleException, wrapWith, import). This vulnerability is fixed in 3.11.0. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Added CWE CWE-693 Added Reference https://github.com/patriksimek/vm2/security/advisories/GHSA-wp5r-2gw5-m7q7