CVE-2026-44003: vm2 is an open source vm/sandbox for Node.js

This week

MEDIUM 5.3REMOTEUPGRADE

CVE-2026-44003 is a medium-severity flaw (CVSS 5.3) affecting vm2. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, vm2's code transformer has a performance optimization that skips AST analysis when the code does not contain catch, import, or async keywords. This fast-path bypass allows sandboxed code to directly access the internal VM2_INTERNAL_STATE_DO_NOT_USE_OR_PROGRAM_WILL_FAIL variable, which exposes internal security functions (handleException, wrapWith, import). This vulnerability is fixed

Why this priority

Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 84%)
CISA exploited list	No
Weakness	CWE-693
Published	2026-05-13
Last modified	2026-10-26

Publisher (CNA): GitHub, Inc. · Vendor: vm2 project

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-13 18:16 UTCPublished CVE record published
2026-10-26 17:10 UTCUpdated Record last modified

vm2 project vm2 UPGRADE

Affected: < 3.11.0

Fixed in: 3.11.0

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls vm2

2. UPGRADE to 3.11.0

npm install vm2@">=3.11.0"

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-44003?

vm2: upgrade to 3.11.0. Exact commands for each OS are on this page.

Is CVE-2026-44003 being exploited?

CVE-2026-44003 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-44003 affect?

CVE-2026-44003 affects vm2. Severity is medium (CVSS 5.3). vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, vm2's code transformer has a performance optimization that skips AST analysis when the code does not contain catch, import, or async keywords. This fast-path bypass allows sandb

How urgent is CVE-2026-44003?

Priority 33/100. Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Node.js vulnerabilities

Related CVEs

CVE-2026-24781 CRITICAL 9.8 UPGRADE vm2 is an open source vm/sandbox for Node.js
CVE-2026-26956 CRITICAL 9.8 UPGRADE vm2 is an open source vm/sandbox for Node.js
CVE-2026-24118 CRITICAL 9.8 UPGRADE vm2 is an open source vm/sandbox for Node.js
CVE-2026-26332 CRITICAL 9.8 UPGRADE vm2 is an open source vm/sandbox for Node.js
CVE-2026-43997 CRITICAL 10.0 UPGRADE vm2 is an open source vm/sandbox for Node.js

References

← Back to latest CVEs