What is CVE-2018-16489?

CVE-2018-16489 is a critical-severity vulnerability in Hackerone Just-Extend, classified under Uncontrolled Resource Consumption. CVSS score: 9.8/10. Published 2019-02-01.

How severe is CVE-2018-16489?

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

Is CVE-2018-16489 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Resource exhaustion in Hackerone Just-Extend

CVE-2018-16489

A prototype pollution vulnerability was found in just-extend <4.0.0 that allows attack to inject properties onto Object.prototype through its functions.

Vulnerability class: DoS (Denial of Service)

EPSS: 0.018 (76.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Hackerone Just-extend — versions <4.0.0
Just-extend_project Just-extend

Weakness classification (CWE)

Public proof-of-concept exploits

References

support@hackerone.com (Exploit, Third Party Advisory, x_refsource_MISC, Issue Tracking)

Frequently asked questions

What is CVE-2018-16489?: CVE-2018-16489 is a critical-severity vulnerability in Hackerone Just-Extend, classified under Uncontrolled Resource Consumption. CVSS score: 9.8/10. Published 2019-02-01.
How severe is CVE-2018-16489?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2018-16489 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.