GHSA-88hf-g992-jg85: vm2 (CVE-2026-92955)

Package	Ecosystem	Affected	Fixed in
vm2	npm	<3.11.8	3.11.8

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

GHSA-88hf-g992-jg85 affects the npm package vm2 in versions below 3.11.8, and the fix is in 3.11.8. The source reports a sandbox escape in NodeVM when console is set to inherit, which is the default, where access to the host's `__proto__` accessor is used to reach the host process object. An attacker who can run code inside the sandbox could use this to execute code outside it, with the CVSS 3.1 base score given as 10. Upgrade vm2 to version 3.11.8 or later.

Written 31 Oct 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
10.0	Critical	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.0071, the 53rd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 13:34 UTC First seen by agentprime
31 Oct 2026, 13:34 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.