by Kastro
Paper/Archive/CVE-2026-92934

CVE-2026-92934

patriksimek vm2 — vm2 before 3.11.8 Sandbox Escape RCE via AggregateError

EPSS 0.8%public exploitCVSS 9.5
critical.is priorityof 100
50
CVSS 9.5 (CNA)9.5 / 10 × 3028.5Not in CISA KEV+300.0EPSS percentile 55.4.554 × 2011.1Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
vm2< 3.11.83.11.8CNA

Scores by source

VulnCheck (CNA)9.5CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
VulnCheck (CNA)9.0CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total

References

exploitgithub.com/patriksimek/vm2/security/advisories/GHSA-x965-fc75-jpqhwriteupvulncheck.com/advisories/vm2-before-3.11.8-sandbox-escape-rce-via-aggregateerror