CVE-2026-92934

Critical

Description

vm2 before 3.11.8 contains an incomplete fix for Error.cause sanitization that allows sandbox escape when revisited host-wrapped AggregateError objects are caught within a single exception handler traversal. Attackers can exploit cycle detection bypass in handleException to access unsanitized host proxies embedded in the errors array, enabling full remote code execution and process information disclosure from the sandbox.

SeverityCritical

CVSS9.0

Exploit probability—

ProductVm2

PublishedSep 17, 2026

First seenSep 17, 2026

Weakness typeCWE-693CWE-693

How to fix

Update

vm23.11.8 or later

Vendor advisories

github.com/patriksimek/vm2/security/advisories/GHSA-x965-fc75-jpqh

Affected products

Product	Affected versions	Fixed in
vm2npm	v < 3.11.8	3.11.8

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