## CVE-2021-33502 - High Severity Vulnerability

Vulnerable Libraries - normalize-url-2.0.1.tgz, normalize-url-4.5.0.tgz

normalize-url-2.0.1.tgz

Normalize a URL

Library home page: https://registry.npmjs.org/normalize-url/-/normalize-url-2.0.1.tgz

Path to dependency file: at-the-wall/package.json

Path to vulnerable library: at-the-wall/node_modules/normalize-url

Dependency Hierarchy: - optisize-1.3.0.tgz (Root Library) - imagemin-pngquant-9.0.1.tgz - pngquant-bin-6.0.0.tgz - bin-wrapper-4.1.0.tgz - download-7.1.0.tgz - got-8.3.2.tgz - cacheable-request-2.1.4.tgz - :x: **normalize-url-2.0.1.tgz** (Vulnerable Library)

normalize-url-4.5.0.tgz

Normalize a URL

Library home page: https://registry.npmjs.org/normalize-url/-/normalize-url-4.5.0.tgz

Path to dependency file: at-the-wall/package.json

Path to vulnerable library: at-the-wall/node_modules/normalize-url

Dependency Hierarchy: - cssnano-5.0.5.tgz (Root Library) - cssnano-preset-default-5.1.2.tgz - postcss-normalize-url-5.0.1.tgz - :x: **normalize-url-4.5.0.tgz** (Vulnerable Library)

Found in HEAD commit: 52b21c0ecf6734b97053053678b1e1ba0c4717ef

Found in base branch: master

Vulnerability Details

The normalize-url package before 4.5.1, 5.x before 5.3.1, and 6.x before 6.0.1 for Node.js has a ReDoS (regular expression denial of service) issue because it has exponential performance for data: URLs.

Publish Date: 2021-05-24

URL: CVE-2021-33502

CVSS 3 Score Details (7.5)

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: None - Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33502

Release Date: 2021-05-24

Fix Resolution: normalize-url - 4.5.1, 5.3.1, 6.0.1

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CVE-2021-33502 (High) detected in normalize-url-2.0.1.tgz, normalize-url-4.5.0.tgz #461

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