Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
patriksimek vm2 — vm2: Snabox breakout via `neutralizeArraySpeciesBatch`
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L N N U H H H 9.8 .0085 55.4 —
AFFECTED
Product Versions Fixed
vm2 < 3.11.2 – —
TIMELINE
May 4 Reserved by GitHub_M
May 13 Published (CNA: GitHub_M)
Aug 6 EXPLOIT PUBLISHED — CVE-2026-44008 (patriksimek vm2). Public exploit reference added.
Description
vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.2, the new method neutralizeArraySpeciesBatch works with objects from the other side but can call into this side via getter on the array prototype exposing objects of the wrong side into the sandbox. This can be used to get host objects and get the host Function object. This allows attackers to write code which can escape from the VM2 sandbox and execute arbitrary commands on the host system. This vulnerability is fixed in 3.11.2.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| May 4, 2026 | Reserved | Reserved by GitHub_M |
| May 13, 2026 | Published | Published (CNA: GitHub_M) |
| August 6, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-44008 (patriksimek vm2). Public exploit reference added. |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| patriksimek | vm2 | — | < 3.11.2 | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-44008 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.