CVE-2026-43999
vm2: NodeVM builtin allowlist bypass via `module` builtin's `Module._load` allows sandbox escape
Severity Score
9.9
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
1
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
Attend
*SSVC
Descriptions
vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, NodeVM's builtin allowlist can be bypassed when the module builtin is allowed (including via the '*' wildcard). The module builtin exposes Node's Module._load(), which loads any module by name directly in the host context, completely bypassing vm2's builtin restriction. This allows sandboxed code to load excluded builtins like child_process and achieve remote code execution. This vulnerability is fixed in 3.11.0.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:Attend
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2026-05-04 CVE Reserved
- 2026-05-13 CVE Published
- 2026-05-15 CVE Updated
- 2026-05-15 EPSS Updated
- 2026-05-15 First Exploit
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-863: Incorrect Authorization
CAPEC
References (1)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|---|---|
| https://github.com/patriksimek/vm2/security/advisories/GHSA-947f-4v7f-x2v8 | 2026-05-15 |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Vm2 Project Search vendor "Vm2 Project" | Vm2 Search vendor "Vm2 Project" for product "Vm2" | < 3.11.0 Search vendor "Vm2 Project" for product "Vm2" and version " < 3.11.0" | node.js |
Affected
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