What’s Vulnerable › Vulnerabilities
CVE-2018-16489
- Severity: critical (CVSS 9.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.8% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2019-02-01 · updated 2026-06-17
- Weakness: CWE-400
Description
A prototype pollution vulnerability was found in just-extend <4.0.0 that allows attack to inject properties onto Object.prototype through its functions.
Affected products
- HackerOne just-extend: before 4.0.0 — fixed in 4.0.0
How to fix
Upgrade to a fixed version: HackerOne just-extend 4.0.0. Check the vendor advisory for mitigations.
References
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