CVE-2018-16486

highpriority · track · 40OT risk · elevatedEPSS 0.015 · 74 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.48% (74th) EPSS

CVSS 7.5 · high

Is it mine?

3 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

A prototype pollution vulnerability was found in defaults-deep <=0.2.4 that would allow a malicious user to inject properties onto Object.prototype.

cvss

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

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v3.09.8criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.09.8criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · OSV

v3.09criticalCVSS:3.0/AV:N/AC:L/PR:N/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-74USprimaryCWE-345USCWE-400USCWE-400US

affected products (3)

Products and version ranges known to be affected.

HackerOne defaults-deep≤ ≤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-pjxw-22xf-6pwcPrototype Pollution in defaults-deep2019-02-07ghsa · osvUS
All versions of `defaults-deep` are vulnerable to prototype pollution. Provided certain input `defaults-deep` can add or modify properties of the `Object` prototype. These properties will be present on all objects. ## Recommendation As no patch is currently available for this vulnerability it is our recommendation to select another module that can provide this functionality.

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 2019-02-01modified 2026-06-17

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+5979 more

references (3)

External citations — patches, advisories, analysis.

https://hackerone.com/reports/380878 cnnvd
https://hackerone.com/reports/380878 enisa_euvd
https://hackerone.com/reports/380878ExploitIssue TrackingThird Party Advisorynvd

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