CVE-2026-43999 (GCVE-0-2026-43999)
Vulnerability from cvelistv5 – Published: 2026-05-13 17:21 – Updated: 2026-09-07 12:05
VLAI
EPSS
VEX
Title
vm2: NodeVM builtin allowlist bypass via `module` builtin's `Module._load` allows sandbox escape
Summary
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.
Severity
9.9 (Critical)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-14 00:00 UTC
CWE
Assigner
GitHub_M
CNA
References
5 references
| URL | Tags |
|---|---|
| https://github.com/patriksimek/vm2/security/advis… | x_refsource_CONFIRM |
| https://access.redhat.com/security/cve/CVE-2026-43999 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2477196 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:50850 | vendor-advisoryx_refsource_REDHAT |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| patriksimek | vm2 |
Affected:
< 3.11.0
|
|
| Red Hat | Red Hat Ansible Automation Platform 2.1 |
Unaffected:
1785854226 , < *
(rpm)
cpe:/a:redhat:ansible_portal:2.1 |
|
| Red Hat | Red Hat Developer Hub |
cpe:/a:redhat:rhdh:1
|
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