CVE-2026-44004: CWE-770: Allocation of Resources Without Limits or Throttling in patriksimek vm2
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.
AI Analysis
Technical Summary
The vm2 sandbox for Node.js before version 3.11.0 contains a resource allocation vulnerability (CWE-770) where sandboxed code can call Buffer.alloc() with an arbitrary size, causing synchronous memory allocation on the host heap. Because Buffer.alloc is a native synchronous C++ call, vm2's timeout option cannot interrupt it, allowing a single request to exhaust host memory and crash the process. This denial-of-service condition is addressed by fixes introduced in vm2 version 3.11.0.
Potential Impact
Exploitation of this vulnerability can cause a denial-of-service by exhausting the host's memory resources, resulting in a process crash with a fatal heap limit error. There is no impact on confidentiality or integrity reported. The vulnerability affects availability by causing host process termination.
Mitigation Recommendations
A fix is available in vm2 version 3.11.0. Users should upgrade to version 3.11.0 or later to remediate this vulnerability. No additional mitigation is indicated by the vendor advisory.
CVE-2026-44004: CWE-770: Allocation of Resources Without Limits or Throttling in patriksimek vm2
Description
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.
CVSS v3.1
Score 7.5high
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vm2 sandbox for Node.js before version 3.11.0 contains a resource allocation vulnerability (CWE-770) where sandboxed code can call Buffer.alloc() with an arbitrary size, causing synchronous memory allocation on the host heap. Because Buffer.alloc is a native synchronous C++ call, vm2's timeout option cannot interrupt it, allowing a single request to exhaust host memory and crash the process. This denial-of-service condition is addressed by fixes introduced in vm2 version 3.11.0.
Potential Impact
Exploitation of this vulnerability can cause a denial-of-service by exhausting the host's memory resources, resulting in a process crash with a fatal heap limit error. There is no impact on confidentiality or integrity reported. The vulnerability affects availability by causing host process termination.
Mitigation Recommendations
A fix is available in vm2 version 3.11.0. Users should upgrade to version 3.11.0 or later to remediate this vulnerability. No additional mitigation is indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-04T21:24:36.505Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-44004","vendor":"Red Hat"}]
Threat ID: 6a04ba22cbff5d8610f482c2
Added to database: 05/13/2026, 17:51:30 UTC
Last enriched: 07/15/2026, 09:20:28 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 73
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