CVE-2018-3723

mediumpriority · track · 36EPSS 0.020 · 81 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.00% (81st) EPSS

CVSS 6.5 · medium

Is it mine?

3 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

defaults-deep node module before 0.2.4 suffers from a Modification of Assumed-Immutable Data (MAID) vulnerability, which allows a malicious user to modify the prototype of "Object" via __proto__, causing the addition or modification of an existing property that will exist on all objects.

cvss

Technical severity, 0–10. One row per scoring source.

8.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.5–8.8

v2.06.5mediumAV:N/AC:L/Au:S/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8 · impact 6.4

v3.08.8highCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.08.8highCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · OSV

v3.08.1highCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimaryCWE-471USCWE-471US

affected products (3)

Products and version ranges known to be affected.

HackerOne defaults-deep node module≤ Versions before 0.2.4enisa_euvdEU
defaults-deep project defaults-deep< 0.2.4nvdUScpe:2.3:a:defaults-deep_project:defaults-deep:*:*:*:*:*:*:*:*
npm defaults-deep< 0.2.4osvUSpkg:npm/defaults-deep

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-cqp5-m4pq-gfgpPrototype Pollution in defaults-deep2018-07-26ghsa · osvUS
Versions of `default-deep` before 0.2.4 are vulnerable to prototype pollution ## Recommendation Update to version 0.2.4 or later.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2018-06-07modified 2026-06-17

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references (6)

External citations — patches, advisories, analysis.

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