CVE-2026-43997
High
High exploit probability or critical severity with a known exploit.
CVSS base
10.0
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS — probability of exploitation (30 days)
1.0%
60.6th percentile
CISA KEV
Not listed
Weakness / dates
CWE-653
Published 2026-05-13 · modified 2026-09-07
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.
Affected
References
- exploit https://github.com/patriksimek/vm2/security/advisories/GHSA-47x8-96vw-5wg6
- 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
- exploit https://github.com/patriksimek/vm2/security/advisories/GHSA-47x8-96vw-5wg6
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43997.json