CVE-2026-92955
Description
A flaw was found in vm2. This vulnerability allows an attacker running untrusted code within the sandbox to achieve arbitrary code execution on the host system. By accessing internal host properties through standard output streams, the untrusted code can manipulate process event handlers and escape the sandbox environment.
Statement
This vulnerability is rated as Important because escaping the sandbox allows untrusted code execution within the host service context, potentially compromising the underlying container or application environment.
Red Hat products that bundle vm2 do so only via typescript-json-schema, which uses the base VM class. The vulnerability requires NodeVM with the default console: 'inherit', which injects the host console object (exposing _stdout/_stderr) into the sandbox; the base VM class never provides a console. Red Hat products does not instantiates NodeVM by default so this vulnerability is an Important rather than a Critical.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 10 | N/A | 10 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | None | N/A | None |
| User Interaction | None | N/A | None |
| Scope | Changed | N/A | Changed |
| Confidentiality | High | N/A | High |
| Integrity Impact | High | N/A | High |
| Availability Impact | High | N/A | High |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
cve.org: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Understanding the Weakness (CWE)
Integrity
Technical Impact: Execute Unauthorized Code or Commands
Other,Integrity
Technical Impact: Varies by Context; Alter Execution Logic
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