What’s Vulnerable › Vulnerabilities

CVE-2026-92934: vm2 before 3.11.8 Sandbox Escape RCE via AggregateError

• Severity: critical (CVSS 9.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-17 · updated 2026-09-17
• Weakness: CWE-693

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.

Affected products

• patriksimek vm2: before 3.11.8 — fixed in 3.11.8

How to fix

Upgrade to a fixed version: patriksimek vm2 3.11.8. Check the vendor advisory for mitigations.

References

• https://github.com/patriksimek/vm2/security/advisories/GHSA-x965-fc75-jpqh
• https://www.vulncheck.com/advisories/vm2-before-3.11.8-sandbox-escape-rce-via-aggregateerror
• https://github.com/patriksimek/vm2/security/advisories/GHSA-x965-fc75-jpqh

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