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Vulnerability record · CVE-2026-92934 · published 17 September 2026

CVE-2026-92934: vm2 before 3.11.8 contains an incomplete fix for Error.cause sanitization that allows sandbox escape when revi…

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.

9.5 CVSS 4.0 Critical EPSS 0.76% · top 46.5% CWE-693 · CWE-693 Deferred
9.5CVSS 4.0 base score
0.76%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
17 Sep 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
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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Source: NIST National Vulnerability Database (record CVE-2026-92934), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.