What is CVE-2026-44002?

CVE-2026-44002 is a medium-severity vulnerability in Patriksimek Vm2, classified under Generation of Error Message Containing Sensitive Information. CVSS score: 5.8/10. Published 2026-05-13.

How severe is CVE-2026-44002?

Medium severity. CVSS v3 base score is 5.8 out of 10.

Information disclosure in Patriksimek Vm2

CVE-2026-44002

vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, vm2's CallSite wrapper class (intended as a safe wrapper for V8's native CallSite) blocks getThis() and getFunction() to prevent host object leakage, but allows getFileName() to return unsanitized host absolute paths. Any sandboxed code can extract the full directory structure, library paths, and framework versions of the host server. This vulnerability is fixed in 3.11.0.

Published 2026-05-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (25.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 25.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

Patriksimek Vm2 — versions < 3.11.0
Vm2 Project

Weakness classification (CWE)

CWE-209 — Generation of Error Message Containing Sensitive Information

References

github.com/patriksimek/vm2/security/advisories/GHSA-v27g-jcqj-v8rw (Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-44002?: CVE-2026-44002 is a medium-severity vulnerability in Patriksimek Vm2, classified under Generation of Error Message Containing Sensitive Information. CVSS score: 5.8/10. Published 2026-05-13.
How severe is CVE-2026-44002?: Medium severity. CVSS v3 base score is 5.8 out of 10.