What is CVE-2026-47698?

CVE-2026-47698 is a critical-severity vulnerability in Patriksimek Vm2, classified under Improper Control of Dynamically-Managed Code Resources. CVSS score: 9.8/10. Published 2026-08-17.

How severe is CVE-2026-47698?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Patriksimek Vm2

CVE-2026-47698

vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.6, lib/bridge.js and lib/setup-sandbox.js fail to block stacked indirection through Function.prototype.call around dangerous host prototype getter and setter mutators, allowing sandbox code to sever a host intrinsic's prototype chain and reach e.constructor.constructor for arbitrary host command execution. This issue is fixed in version 3.11.6.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Patriksimek Vm2 — versions < 3.11.6

Weakness classification (CWE)

CWE-913 — Improper Control of Dynamically-Managed Code Resources

References

security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-47698?: CVE-2026-47698 is a critical-severity vulnerability in Patriksimek Vm2, classified under Improper Control of Dynamically-Managed Code Resources. CVSS score: 9.8/10. Published 2026-08-17.
How severe is CVE-2026-47698?: Critical severity. CVSS v3 base score is 9.8 out of 10.