## CVE-2021-26707 - High Severity Vulnerability

Vulnerable Library - merge-deep-3.0.2.tgz

Recursively merge values in a javascript object.

Library home page: https://registry.npmjs.org/merge-deep/-/merge-deep-3.0.2.tgz

Path to dependency file: Google-api-python-client/package.json

Path to vulnerable library: Google-api-python-client/node_modules/merge-deep/package.json

Dependency Hierarchy: - jest-puppeteer-4.4.0.tgz (Root Library) - jest-environment-puppeteer-4.4.0.tgz - :x: **merge-deep-3.0.2.tgz** (Vulnerable Library)

Found in HEAD commit: f8f03aed50596222443692cbf2b69e91a97207ae

Found in base branch: main

Vulnerability Details

The merge-deep library before 3.0.3 for Node.js can be tricked into overwriting properties of Object.prototype or adding new properties to it. These properties are then inherited by every object in the program, thus facilitating prototype-pollution attacks against applications using this library.

Publish Date: 2021-06-02

URL: CVE-2021-26707

CVSS 3 Score Details (9.8)

Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: High - Integrity Impact: High - Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://bugzilla.redhat.com/show_bug.cgi?id=1922259

Release Date: 2021-02-05

Fix Resolution: 3.0.3

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CVE-2021-26707 (High) detected in merge-deep-3.0.2.tgz - autoclosed #218

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