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CVE-2018-16492

UNKNOWN
Published 2019-02-01T18:00:00
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No CVSS data available

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.

Understanding This Vulnerability

This Common Vulnerabilities and Exposures (CVE) entry provides detailed information about a security vulnerability that has been publicly disclosed. CVEs are standardized identifiers assigned by MITRE Corporation to track and catalog security vulnerabilities across software and hardware products.

The severity rating (UNKNOWN) indicates the potential impact of this vulnerability based on the CVSS (Common Vulnerability Scoring System) framework. Higher severity ratings typically indicate vulnerabilities that could lead to more significant security breaches if exploited. Security teams should prioritize remediation efforts based on severity, exploit availability, and the EPSS (Exploit Prediction Scoring System) score, which predicts the likelihood of exploitation in the wild.

If this vulnerability affects products or systems in your infrastructure, we recommend reviewing the affected products section, checking for available patches or updates from vendors, and implementing recommended workarounds or solutions until a permanent fix is available. Organizations should also monitor security advisories and threat intelligence feeds for updates about active exploitation of this vulnerability.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

References

EU Vulnerability Database

Monitored by ENISA for EU cybersecurity

EU Coordination

EU Coordinated

Exploitation Status

No Known Exploitation

ENISA Analysis

Malicious code in bioql (PyPI)

Affected Products (ENISA)

hackerone
extend

ENISA Scoring

CVSS Score (3.0)

9.8
/10
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score

1.320
probability

Data provided by ENISA EU Vulnerability Database. Last updated: October 3, 2025

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

✓ GitHub Reviewed MODERATE

Prototype Pollution in extend

GHSA-qrmc-fj45-qfc2

Advisory Details

Versions of `extend` prior to 3.0.2 (for 3.x) and 2.0.2 (for 2.x) are vulnerable to Prototype Pollution. The `extend()` function allows attackers to modify the prototype of Object causing the addition or modification of an existing property that will exist on all objects. ## Recommendation If you're using `extend` 3.x upgrade to 3.0.2 or later. If you're using `extend` 2.x upgrade to 2.0.2 or later.

Affected Packages

npm extend
ECOSYSTEM: ≥3.0.0 <3.0.2
npm extend
ECOSYSTEM: ≥0 <2.0.2

CVSS Scoring

CVSS Score

5.0

Advisory provided by GitHub Security Advisory Database. Published: February 7, 2019, Modified: August 31, 2020

References

Published: 2019-02-01T18:00:00
Last Modified: 2024-08-05T10:24:32.840Z
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