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CVE-2022-39266

31
FAUCET Score

CVE-2022-39266 affects isolated-vm, a Node.js library, in versions 4.3.6 and prior. This critical vulnerability allows attackers to bypass the sandbox and execute arbitrary code within the Node.js process by providing untrusted v8 cached data through the CachedDataOptions API. With a CVSS score of 9.8, it presents a severe risk due to its network attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.3.6CPE matchmatch criteria
cpe:2.3:a:isolated-vm_project:isolated-vm:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

9.6CRITICAL

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.08%
Probability of exploitation in next 30 days
EPSS Percentile
61.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0108 is in the 47th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

npmpatch availablevia ghsa
Product: isolated-vmFixed in: 4.3.7

Vendor Advisories (1)

npmGHSA-2jjq-x548-rhpvcritical

isolated-vm has vulnerable CachedDataOptions in API

Sep 30, 2022

References

github.com / laverdet/isolated-vm/commit/218e87a6d4e8cb818bea76d1ab30cd0be51920e8
github.com / laverdet/isolated-vm/commits/v4.3.7
github.com / laverdet/isolated-vm/issues/379
github.com / laverdet/isolated-vm/security/advisories/GHSA-2jjq-x548-rhpv
Third Party Advisory