What’s Vulnerable › Vulnerabilities
CVE-2018-16492: Prototype Pollution in extend
- Severity: critical (CVSS 9.8 v3.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 3.0% 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 module extend <2.0.2, ~<3.0.2 that allows an attacker to inject arbitrary properties onto Object.prototype.
Affected products
- HackerOne extend: before 2.0.2; from 3.0.0 before 3.0.2 — fixed in 2.0.2, 3.0.2
- Npm Extend: from 3.0.0 before 3.0.2; from 1.1.3 before 2.0.2 — fixed in 3.0.2, 2.0.2
How to fix
Upgrade to a fixed version: HackerOne extend 2.0.2, 3.0.2; Npm Extend 3.0.2, 2.0.2. Check the vendor advisory for mitigations.
References
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