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9.8
CRITICAL CVSS 3.1
CVE-2026-26956
vm2: WASM Sandbox Escape (Node 25 only)
Overview
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.

Details
INFO

Published Date :

May 4, 2026, 5:16 p.m.

Last Modified :

May 8, 2026, 7:15 p.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Impact
Affected Products

The following products are affected by CVE-2026-26956 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Vm2_project vm2
: Total Affected Vendor : 1 | Products : 1
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 CRITICAL [email protected]
Solution
Update vm2 to version 3.10.5 to fix sandbox escape and arbitrary code execution vulnerabilities.
  • Update vm2 to version 3.10.5.
  • Review sandbox security configurations.
Public PoC/Exploit Available at Github

CVE-2026-26956 has a 2 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-26956.

URL Resource
https://github.com/patriksimek/vm2/releases/tag/v3.10.5 Release Notes
https://github.com/patriksimek/vm2/security/advisories/GHSA-ffh4-j6h5-pg66 Exploit Vendor Advisory
https://github.com/patriksimek/vm2/security/advisories/GHSA-ffh4-j6h5-pg66 Exploit Vendor Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-26956 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-26956 weaknesses.

CAPEC-1: Accessing Functionality Not Properly Constrained by ACLs Accessing Functionality Not Properly Constrained by ACLs CAPEC-17: Using Malicious Files Using Malicious Files CAPEC-20: Encryption Brute Forcing Encryption Brute Forcing CAPEC-22: Exploiting Trust in Client Exploiting Trust in Client CAPEC-36: Using Unpublished Interfaces or Functionality Using Unpublished Interfaces or Functionality CAPEC-51: Poison Web Service Registry Poison Web Service Registry CAPEC-57: Utilizing REST's Trust in the System Resource to Obtain Sensitive Data Utilizing REST's Trust in the System Resource to Obtain Sensitive Data CAPEC-59: Session Credential Falsification through Prediction Session Credential Falsification through Prediction CAPEC-65: Sniff Application Code Sniff Application Code CAPEC-74: Manipulating State Manipulating State CAPEC-87: Forceful Browsing Forceful Browsing CAPEC-107: Cross Site Tracing Cross Site Tracing CAPEC-127: Directory Indexing Directory Indexing CAPEC-237: Escaping a Sandbox by Calling Code in Another Language Escaping a Sandbox by Calling Code in Another Language CAPEC-477: Signature Spoofing by Mixing Signed and Unsigned Content Signature Spoofing by Mixing Signed and Unsigned Content CAPEC-480: Escaping Virtualization Escaping Virtualization CAPEC-668: Key Negotiation of Bluetooth Attack (KNOB) Key Negotiation of Bluetooth Attack (KNOB)

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
agentxagi/awesome-discoveries

Curadoria viva de projetos e insights sobre AI agents, multi-agent systems, e infra de produção. Atualizado automaticamente pelo Growth Agent.

Updated: 1 week ago
5 stars 0 fork 0 watcher
Born at : May 19, 2026, 4:17 p.m. This repo has been linked 37 different CVEs too.
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arsenyspb/atobar-scb

None

Dockerfile Python

Updated: 3 weeks ago
0 stars 0 fork 0 watcher
Born at : May 9, 2026, 10:52 a.m. This repo has been linked 2 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-26956 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-26956 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    May. 08, 2026

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:a:vm2_project:vm2:*:*:*:*:*:node.js:*:* versions up to (excluding) 3.10.5
    Added Reference Type GitHub, Inc.: https://github.com/patriksimek/vm2/releases/tag/v3.10.5 Types: Release Notes
    Added Reference Type CISA-ADP: https://github.com/patriksimek/vm2/security/advisories/GHSA-ffh4-j6h5-pg66 Types: Exploit, Vendor Advisory
    Added Reference Type GitHub, Inc.: https://github.com/patriksimek/vm2/security/advisories/GHSA-ffh4-j6h5-pg66 Types: Exploit, Vendor Advisory
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    May. 05, 2026

    Action Type Old Value New Value
    Added Reference https://github.com/patriksimek/vm2/security/advisories/GHSA-ffh4-j6h5-pg66
  • New CVE Received by [email protected]

    May. 04, 2026

    Action Type Old Value New Value
    Added 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.
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Added CWE CWE-693
    Added Reference https://github.com/patriksimek/vm2/releases/tag/v3.10.5
    Added Reference https://github.com/patriksimek/vm2/security/advisories/GHSA-ffh4-j6h5-pg66
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 9.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact