CVE-2026-43997
vm2: Sandbox Escape
CRITICAL 10.0
At a glance
- Source
- NVD
- EPSS
- EPSS 0.98 % · percentile 62 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- GitHub_M
- NVD status
- Modified
Description
vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, it is possible to obtain the host Object. There are various ways to use the host Object, to escape the sandbox, one example would be using HostObject.getOwnPropertySymbols to obtain Symbol(nodejs.util.inspect.custom). This vulnerability is fixed in 3.11.0.
Weaknesses (CWE)
References
- https://github.com/patriksimek/vm2/security/advisories/GHSA-47x8-96vw-5wg6
- https://access.redhat.com/security/cve/CVE-2026-43997
- https://bugzilla.redhat.com/show_bug.cgi?id=2477203
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43997.json
- https://access.redhat.com/errata/RHSA-2026:50850
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | CRITICAL 10.0 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H | GitHub_M |
| CVSS 3.1 | CRITICAL 10.0 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H | redhat-SADP |
| CVSS 3.1 | CRITICAL 10.0 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H | NVD · security-advisories@github.com (Secondary) |
| CVSS 3.1 | CRITICAL 10.0 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H | NVD · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Secondary) |
Advisories
- GHSA-47x8-96vw-5wg6 — vm2 Access to Host Object Enables Sandbox Escape
European references
- ENISA EUVD · EUVD-2026-30067
- GCVE · GCVE-0-2026-43997
Affected configurations (NVD CPE)
cpe:2.3:a:vm2_project:vm2:*:*:*:*:*:node.js:*:*< 3.11.0
Affected products
| Product | Versions |
|---|---|
| patriksimek · vm2 | affected < 3.11.0 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |