CVE-2026-26956

vm2: WASM Sandbox Escape (Node 25 only)

CRITICAL 9.8

At a glance

Source: NVD
EPSS: EPSS 1.09 % · percentile 65 (2026-10-28)
State: PUBLISHED
Published: 2026-05-04 16:37 UTC
Updated: 2026-07-15 01:14 UTC
Assigner: GitHub_M
NVD status: Modified

Description

vm2 is an open source vm/sandbox for Node.js. In version 3.10.4, vm2 is vulnerable to full sandbox escape with arbitrary code execution. Attacker code inside VM.run() obtains host process object and runs host commands with zero host cooperation. This issue has been patched in version 3.10.5.

Weaknesses (CWE)

CWE-693 — Protection Mechanism Failure
CWE-653 — Improper Isolation or Compartmentalization

References

Scores

Version	Score	Vector	Scored by
CVSS 3.1	CRITICAL 9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	GitHub_M
CVSS 3.1	CRITICAL 9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	redhat-SADP
CVSS 3.1	CRITICAL 9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	NVD · security-advisories@github.com (Secondary)
CVSS 3.1	CRITICAL 9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	NVD · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Secondary)

Advisories

GHSA-ffh4-j6h5-pg66 — VM2 Has a WASM Sandbox Escape

European references

ENISA EUVD · EUVD-2026-26995
GCVE · GCVE-0-2026-26956

Affected configurations (NVD CPE)

cpe:2.3:a:vm2_project:vm2:*:*:*:*:*:node.js:*:* < 3.10.5

Affected products

Product	Versions
patriksimek · vm2	affected = 3.10.4

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