CVE catalog
CVE-2026-43997
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 usin
- Severity
- Critical · CVSS 10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.98% · Oct 25, 2026
A flaw was found in vm2 (before 3.11.0), a Node.js sandbox library. Sandboxed code can obtain the host Object (e.g. via HostObject.getOwnPropertySymbols and Symbol(nodejs.util.inspect.custom)), bypassing isolation and enabling arbitrary code execution on the host. vm2: vm2: Arbitrary code execution via sandbox escape vm2 is vulnerable to sandbox escape via host Object leakage in the VM bridge. A remote unauthenticated attacker who can submit code to a vm2 sandbox may obtain host-realm objects and execute arbitrary code on the host process. Fixed in vm2 3.11.0. The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | vm2 | Not reported | 3.11.0 | fixed |
| Cpe | vm2 | Not reported | 3.11.0 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | vm2 | cpe | Not reported | 3.11.0 | Not reported | Not reported | Not reported |
| Cpe | vm2 | cpe | Not reported | 3.11.0 | Not reported | NVD-CVE-2026-43997 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://access.redhat.com/errata/RHSA-2026:50850]
- [https://access.redhat.com/security/cve/CVE-2026-43997]
- [https://bugzilla.redhat.com/show_bug.cgi?id=2477203]
- [https://github.com/patriksimek/vm2/security/advisories/GHSA-47x8-96vw-5wg6]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-43997]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43997.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1349.json]
[CERT-Bund public advisories] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [Red Hat security advisories and VEX]