Open-source package vulnerability · npm

GHSA-x5qg-8pq6-39h6: Duplicate Advisory: Sandboxed code can read and write host-realm memory via Node's shared Buffer pool

criticalCVSS 4.0 10.0 · 3.1 10.0

This advisory was withdrawn on Oct 5, 2026. The publisher no longer considers it a valid vulnerability.

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-fcqc-726x-5wfc This link is maintained to preserve external references. Original 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.

Published Sep 17, 2026 · Updated Oct 5, 2026

Affected packages

vm2

Ecosystem: npm
Affected: <= 3.11.6
Fixed in: No patched version yet
Check: npm ls vm2

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-fcqc-726x-5wfc This link is maintained to preserve external references.

Original 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.

References

How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology

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