CVE-2026-92952
Description
A flaw was found in vm2. The vm2 sandbox incompletely filters Node.js internal symbols, specifically nodejs.stream.disturbed and nodejs.stream.errored, across the sandbox boundary. This allows code running within the sandbox to obtain real host symbols and use them to corrupt the host-visible stream state. Consequently, an attacker can bypass host logic that relies on Node.js stream-state helpers, potentially leading to incorrect handling of streams. This vulnerability does not enable host code execution.
Statement
This flaw in vm2 allows sandbox code to corrupt host-visible stream state by bypassing symbol filtering, which can lead to integrity issues in applications relying on Node.js stream-state helpers. While this vulnerability does not enable host code execution, its high attack complexity requires specific conditions where the embedder exposes host WebStream objects to the sandbox.
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).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 6.8 | N/A | 6.8 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | High | N/A | High |
| Privileges Required | None | N/A | None |
| User Interaction | None | N/A | None |
| Scope | Changed | N/A | Changed |
| Confidentiality | None | N/A | None |
| Integrity Impact | High | N/A | High |
| Availability Impact | None | N/A | None |
Vector
Red Hat: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N
cve.org: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N
Understanding the Weakness (CWE)
Access Control
Technical Impact: Bypass Protection Mechanism
Attackers may be able to find other malicious inputs that were not expected by the developer, allowing them to bypass the intended protection mechanism.
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