CVE-2021-33502

nodejs-normalize-url: ReDoS for data URLs

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Severity

Moderate

Red Hat Product Security

7.5

CVSS 3.1

Review impact separately from score.

Published · May 21, 2021

Updated · October 29, 2026

Description

A flaw was found in normalize-url. Node.js has a ReDoS (regular expression denial of service) issue because it has exponential performance for data.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-400 · Uncontrolled Resource Consumption