CVE-2021-33502

HighCVSS 7.5/10Last 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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-1333

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://github.com/sindresorhus/normalize-url/releases/tag/v6.0.1Release Notes, Third Party Advisory
https://security.netapp.com/advisory/ntap-20210706-0001/Third Party Advisory
https://github.com/sindresorhus/normalize-url/releases/tag/v6.0.1Release Notes, Third Party Advisory
https://security.netapp.com/advisory/ntap-20210706-0001/Third Party Advisory

Timeline

Published: May 24, 2021
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2021

CVE-2021-335037.5An issue was discovered in urllib3 before 1.26.5. When provided with a URL containing many @ characters in the authority component, the auth CVE-2021-335044.9Couchbase Server before 7.1.0 has Incorrect Access Control.CVE-2021-335057.8A local malicious user can circumvent the Falco detection engine through 0.28.1 by running a program that alters arguments of system calls b CVE-2021-335067.5jitsi-meet-prosody in Jitsi Meet before 2.0.5963-1 does not ensure that restrict_room_creation is set by default. This can allow an attacker CVE-2021-335076.1Zope Products.CMFCore before 2.5.1 and Products.PluggableAuthService before 2.6.2, as used in Plone through 5.2.4 and other products, allow CVE-2021-335085.4Plone through 5.2.4 allows XSS via a full name that is mishandled during rendering of the ownership tab of a content item.CVE-2021-335099.9Plone through 5.2.4 allows remote authenticated managers to perform disk I/O via crafted keyword arguments to the ReStructuredText transform CVE-2021-33515.4OpenPLC runtime V3 through 2016-03-14 allows stored XSS via the Device Name to the web server's Add New Device page.CVE-2021-335104.3Plone through 5.2.4 allows remote authenticated managers to conduct SSRF attacks via an event ical URL, to read one line of a file.CVE-2021-335117.5Plone though 5.2.4 allows SSRF via the lxml parser. This affects Diazo themes, Dexterity TTW schemas, and modeleditors in plone.app.theming,CVE-2021-335125.4Plone through 5.2.4 allows stored XSS attacks (by a Contributor) by uploading an SVG or HTML document.CVE-2021-335135.4Plone through 5.2.4 allows XSS via the inline_diff methods in Products.CMFDiffTool.