Description
vm2 versions from 3.11.0 before 3.11.8 fail to protect host TypedArray and ArrayBuffer prototypes from sandbox mutation. Attackers can use prototype-walking primitives to reach and modify host Uint8Array.prototype, %TypedArray%.prototype, and ArrayBuffer.prototype, causing host-created typed arrays to observe attacker-controlled properties after VM.run() returns.
Published: 2026-09-17
Score: 9.3 Critical
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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History

Thu, 17 Sep 2026 14:00:00 +0000

Type Values Removed Values Added
Description vm2 versions from 3.11.0 before 3.11.8 fail to protect host TypedArray and ArrayBuffer prototypes from sandbox mutation. Attackers can use prototype-walking primitives to reach and modify host Uint8Array.prototype, %TypedArray%.prototype, and ArrayBuffer.prototype, causing host-created typed arrays to observe attacker-controlled properties after VM.run() returns.
Title vm2 3.11.0 through 3.11.7 Prototype Pollution via TypedArray
Weaknesses CWE-913
References
Metrics cvssV3_1

{'score': 10, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H'}

Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-17T13:46:12.146Z

Reserved: 2026-09-17T12:43:03.568Z

Link: CVE-2026-92953

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-09-17T14:18:01.160

Modified: 2026-09-17T14:18:01.273

Link: CVE-2026-92953

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses