boxscore/security
CVE · referencelatest edition

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.

CVE-2026-44008CRITICAL
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.
CWE-668, CWE-1100 · CNA: GitHub_M · CVSS v3.1 · 5 references · NVD status: Modified

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
DateEventDetail
May 4, 2026ReservedReserved by GitHub_M
May 13, 2026PublishedPublished (CNA: GitHub_M)
August 6, 2026EXPLOIT PUBLISHEDEXPLOIT PUBLISHED — CVE-2026-44008 (patriksimek vm2). Public exploit reference added.

Affected

Affected products and packages — 1 row
VendorProduct / PackageEcosystemVersion introducedFixed
patriksimekvm2< 3.11.2

Weaknesses

CWE-668 · CWE-1100

References (5)

Related

Authoritative record: CVE-2026-44008 at cve.org

Vendors: patriksimek

Weaknesses: CWE-668 · CWE-1100

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.