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CVE-2018-3723

26
FAUCET Score

CVE-2018-3723 describes a Modification of Assumed-Immutable Data (MAID) vulnerability in the defaults-deep node module prior to version 0.2.4. This flaw allows an attacker to manipulate the prototype of "Object" via __proto__, leading to the addition or modification of properties that will affect all objects. With a CVSS score of 8.8 (HIGH), this vulnerability is remotely exploitable with low attack complexity and no user interaction, potentially leading to 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 regarding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.2.4CPE matchmatch criteria
cpe:2.3:a:defaults-deep_project:defaults-deep:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.04%
Probability of exploitation in next 30 days
EPSS Percentile
79.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0204 is in the 77th percentile among its peer group of 17,822 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: defaults-deepFixed in: 0.2.4

Vendor Advisories (1)

npmGHSA-cqp5-m4pq-gfgphigh

Prototype Pollution in defaults-deep

Jul 26, 2018

References

github.com / jonschlinkert/defaults-deep/commit/c873f341327ad885ff4d0f23b3d3bca31b0343e5
PatchThird Party Advisory
hackerone.com / reports/310514
ExploitThird Party Advisory