## CVE-2021-33587 - Medium Severity Vulnerability

Vulnerable Libraries - css-what-3.3.0.tgz, css-what-2.1.3.tgz

css-what-3.3.0.tgz

a CSS selector parser

Library home page: https://registry.npmjs.org/css-what/-/css-what-3.3.0.tgz

Path to dependency file: weather-app/package.json

Path to vulnerable library: weather-app/node_modules/css-what

Dependency Hierarchy: - react-scripts-4.0.3.tgz (Root Library) - webpack-5.5.0.tgz - plugin-svgo-5.5.0.tgz - svgo-1.3.2.tgz - css-select-2.1.0.tgz - :x: **css-what-3.3.0.tgz** (Vulnerable Library)

css-what-2.1.3.tgz

a CSS selector parser

Library home page: https://registry.npmjs.org/css-what/-/css-what-2.1.3.tgz

Path to dependency file: weather-app/package.json

Path to vulnerable library: weather-app/node_modules/css-what

Dependency Hierarchy: - react-scripts-4.0.3.tgz (Root Library) - html-webpack-plugin-4.5.0.tgz - pretty-error-2.1.1.tgz - renderkid-2.0.3.tgz - css-select-1.2.0.tgz - :x: **css-what-2.1.3.tgz** (Vulnerable Library)

Found in HEAD commit: 6ad6f848a262586b764cc299d40063fa88ddc747

Found in base branch: master

Vulnerability Details

The css-what package before 5.0.1 for Node.js does not ensure that attribute parsing has Linear Time Complexity relative to the size of the input.

Publish Date: 2021-05-28

URL: CVE-2021-33587

CVSS 3 Score Details (5.3)

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

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33587

Release Date: 2021-05-28

Fix Resolution: css-what - 5.0.1

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CVE-2021-33587 (Medium) detected in css-what-3.3.0.tgz, css-what-2.1.3.tgz #97

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