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Vulnerability record · CVE-2026-92947 · published 17 September 2026

CVE-2026-92947: Information exposure vulnerability

vm2 before 3.11.7 exposes Node's shared Buffer pool to sandboxed code, allowing disclosure of host memory used by Buffer.from, Buffer.concat, and related allocations. Sandboxed code can read and write to host-realm buffers by acquiring ArrayBuffers from small allocations, leading to sensitive data exposure and potential denial-of-service.

10.0 CVSS 4.0 Critical EPSS 0.48% · top 60.9% CWE-200 · Information exposure Deferred
10.0CVSS 4.0 base score
0.48%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 3.11.7 exposes Node's shared Buffer pool to sandboxed code, allowing disclosure of host memory used by Buffer.from, Buffer.concat, and related allocations. Sandboxed code can read and write to host-realm buffers by acquiring ArrayBuffers from small allocations, leading to sensitive data exposure and potential denial-of-service.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L/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-fcqc-726x-5wfc
https://www.vulncheck.com/advisories/vm2-before-3.11.7-memory-disclosure-via-buffer-pool
https://github.com/patriksimek/vm2/security/advisories/GHSA-fcqc-726x-5wfc

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Source: NIST National Vulnerability Database (record CVE-2026-92947), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.