CVE-2026-43999

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Source
https://cve.org/CVERecord?id=CVE-2026-43999
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43999.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-43999
Aliases
Downstream
Published
2026-05-13T17:21:22.308Z
Modified
2026-05-28T03:54:49.034181950Z
Severity
  • 9.9 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
Summary
vm2: NodeVM builtin allowlist bypass via `module` builtin's `Module._load` allows sandbox escape
Details

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 childprocess and achieve remote code execution. This vulnerability is fixed in 3.11.0.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43999.json",
    "cwe_ids": [
        "CWE-863"
    ],
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/patriksimek/vm2

Affected ranges

Type
GIT
Repo
https://github.com/patriksimek/vm2
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
fca270df73b64a88e2f9ce71ac17663b6eaf814e

Affected versions

3.*
3.9.10
3.9.11
3.9.12
3.9.13
3.9.14
3.9.15
3.9.16
3.9.17
3.9.18
3.9.19
3.9.3
3.9.4
3.9.5
3.9.6
3.9.7
3.9.8
3.9.9
v3.*
v3.10.0
v3.10.1
v3.10.2
v3.10.3
v3.10.4
v3.10.5
v3.9.0
v3.9.1
v3.9.2

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43999.json"