What is CVE-2018-16486?

CVE-2018-16486 is a critical-severity vulnerability in Defaults-Deep Project, classified under Uncontrolled Resource Consumption. CVSS score: 9.8/10. Published 2019-02-01.

How severe is CVE-2018-16486?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Resource exhaustion in Defaults-Deep Project

CVE-2018-16486

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

Vulnerability class: DoS (Denial of Service)

Published 2019-02-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.015 (73.5th percentile), scored 2026-10-19.

Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 73.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.015 · change: +0.001

Affected products

Defaults-Deep Project
HackerOne Defaults-Deep — versions <=0.2.4

Weakness classification (CWE)

References

hackerone.com/reports/380878 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2018-16486?: CVE-2018-16486 is a critical-severity vulnerability in Defaults-Deep Project, classified under Uncontrolled Resource Consumption. CVSS score: 9.8/10. Published 2019-02-01.
How severe is CVE-2018-16486?: Critical severity. CVSS v3 base score is 9.8 out of 10.