patriksimek vm2 up to 3.10.x Buffer.alloc allocation of resources

Summaryinfo

A vulnerability has been found in patriksimek vm2 up to 3.10.x and classified as problematic. The impacted element is the function Buffer.alloc. This manipulation causes allocation of resources. This vulnerability is tracked as CVE-2026-44004. The attack is possible to be carried out remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in patriksimek vm2 up to 3.10.x and classified as problematic. Affected by this vulnerability is the function Buffer.alloc. The manipulation with an unknown input leads to a allocation of resources vulnerability. The CWE definition for the vulnerability is CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. As an impact it is known to affect availability. The summary by CVE is:

vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, sandboxed code can call Buffer.alloc() with an arbitrary size to allocate memory directly on the host heap. Because Buffer.alloc is a synchronous C++ native call, vm2's timeout option cannot interrupt it. A single request can exhaust host memory and crash the process with a FATAL ERROR: Reached heap limit. This vulnerability is fixed in 3.11.0.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-44004 since 05/04/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

Upgrading to version 3.11.0 eliminates this vulnerability.

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Productinfo

Vendor

• patriksimek

Name

• vm2

Version

• 3.0
• 3.1
• 3.2
• 3.3
• 3.4
• 3.5
• 3.6
• 3.7
• 3.8
• 3.9
• 3.10

Website

• Product: https://github.com/patriksimek/vm2/

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