CVE-2026-92934

vm2 before 3.11.8 Sandbox Escape RCE via AggregateError

En bref

Sévérité: CRITICAL 9.5
EPSS: EPSS 0.76 % · centile 55 (2026-10-27)
État: PUBLISHED
Publiée: 2026-09-17
Mise à jour: 2026-09-17
Attribuée par: VulnCheck
Statut NVD: Deferred

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.

Scores

Version	Score	Vecteur	Évalué par
CVSS 4.0	CRITICAL 9.5	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	VulnCheck
CVSS 3.1	CRITICAL 9.0	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H	VulnCheck
CVSS 4.0	CRITICAL 9.5	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:X/V:X/RE:X/U:X	NVD · disclosure@vulncheck.com (Secondary)
CVSS 3.1	CRITICAL 9.0	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H	NVD · disclosure@vulncheck.com (Secondary)

Faiblesses (CWE)

CWE-693

Avis

GHSA-x965-fc75-jpqh — vm2 sandbox escape to host RCE via revisited host-wrapped AggregateError bypassing Error sanitization cycle short-circuit

Références européennes

ENISA EUVD · EUVD-2026-81584
GCVE · GCVE-0-2026-92934

Produits affectés

Produit	Versions
patriksimek · vm2	affected 0 < 3.11.8 ; unaffected 3.11.8

Références

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD