CVE-2021-33502

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CVSS 3.1

7.5 high

EPSS

2%p76

Published

May 24, 2021 (May 24, 2021)

Modified

Jun 17, 2026

Description

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.

Vendors: normalize-url project
Products: normalize-url
Weakness: CWE-1333
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (1.7%)

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