What is CVE-2026-44005?

CVE-2026-44005 is a critical-severity vulnerability in Patriksimek Vm2, classified under Code Injection. CVSS score: 10.0/10. Published 2026-05-13.

How severe is CVE-2026-44005?

Critical severity. CVSS v3 base score is 10.0 out of 10.

RCE in Patriksimek Vm2

CVE-2026-44005

vm2 is an open source vm/sandbox for Node.js. From 3.9.6 to 3.10.5, vm2's bridge exposes mutable proxies for real host-realm intrinsic prototypes and then forwards sandbox writes into the underlying host objects with otherReflectSet() and…

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.001 (28.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H.

Affected products

Patriksimek Vm2 — versions >= 3.9.6, < 3.11.0
Vm2_project Vm2

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-44005?: CVE-2026-44005 is a critical-severity vulnerability in Patriksimek Vm2, classified under Code Injection. CVSS score: 10.0/10. Published 2026-05-13.
How severe is CVE-2026-44005?: Critical severity. CVSS v3 base score is 10.0 out of 10.