CVE-2026-26956

vm2: WASM Sandbox Escape (Node 25 only)

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

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.

*Credits: N/A

CVSS Scores

GitHubv3.1 9.8

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

Poc

Automatable

Yes

Tech. Impact

Total

* Organization's Worst-case Scenario

Timeline

2026-02-16 CVE Reserved
2026-05-04 CVE Published
2026-05-08 CVE Updated
2026-05-08 First Exploit
2026-05-10 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-693: Protection Mechanism Failure

CAPEC

References (2)

URL	Tag	Source
https://github.com/patriksimek/vm2/releases/tag/v3.10.5	Release Notes

URL	Date	SRC
https://github.com/patriksimek/vm2/security/advisories/GHSA-ffh4-j6h5-pg66	2026-05-08

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Vm2 Project Search vendor "Vm2 Project"		Vm2 Search vendor "Vm2 Project" for product "Vm2"				< 3.10.5 Search vendor "Vm2 Project" for product "Vm2" and version " < 3.10.5"		node.js		Affected