CVE-2022-39266

critical

Description

isolated-vm is a library for nodejs which gives the user access to v8's Isolate interface. In versions 4.3.6 and prior, if the untrusted v8 cached data is passed to the API through CachedDataOptions, attackers can bypass the sandbox and run arbitrary code in the nodejs process. Version 4.3.7 changes the documentation to warn users that they should not accept `cachedData` payloads from a user.

References

https://github.com/laverdet/isolated-vm/security/advisories/GHSA-2jjq-x548-rhpv

https://github.com/laverdet/isolated-vm/issues/379

https://github.com/laverdet/isolated-vm/commits/v4.3.7

https://github.com/laverdet/isolated-vm/commit/218e87a6d4e8cb818bea76d1ab30cd0be51920e8

Details

Source: Mitre, NVD

Published: 2022-09-29

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.00041