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CVE-2018-16492

31
FAUCET Score

CVE-2018-16492 is a critical prototype pollution vulnerability affecting versions of the 'extend' module prior to 2.0.2 and 3.0.2. This flaw allows an unauthenticated attacker to inject arbitrary properties into Object.prototype, leading to high impact on confidentiality, integrity, and availability. Despite its critical CVSS score of 9.8, there is currently no known active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.0.2CPE matchmatch criteria
cpe:2.3:a:extend_project:extend:*:*:*:*:*:node.js:*:*
>= 3.0.0, < 3.0.2CPE matchmatch criteria
cpe:2.3:a:extend_project:extend:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.05%
Probability of exploitation in next 30 days
EPSS Percentile
86.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0305 is in the 78th 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 (4)

npmpatch availablevia ghsa
Product: extendFixed in: 3.0.2
npmpatch availablevia ghsa
Product: extendFixed in: 2.0.2
redhatpatch availablevia redhat_api
Product: Red Hat Quay 3Fixed in: quay/quay-rhel8:v3.6.0-62
View patch
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-nodejs6-nodejs-extend

Vendor Advisories (2)

npmGHSA-qrmc-fj45-qfc2medium

Prototype Pollution in extend

Feb 7, 2019
redhatCVE-2018-16492Moderate

nodejs-extend: Prototype pollution can allow attackers to modify object properties

Apr 24, 2018

References

hackerone.com / reports/381185
ExploitIssue TrackingThird Party Advisory