VULNERABILITY INTELLIGENCE

CVE-2021-32821

CVSS score6.2 MEDIUM
EPSS probability0.65%
CISA KEVNot currently listed
Published2023-01-03
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

MooTools is a collection of JavaScript utilities for JavaScript developers. All known versions include a CSS selector parser that is vulnerable to Regular Expression Denial of Service (ReDoS). An attack requires that an attacker can inject a string into a CSS selector at runtime, which is quite common with e.g. jQuery CSS selectors. No patches are available for this issue.

Weakness classification

  • security-advisories@github.com: CWE-400
  • nvd@nist.gov: CWE-1333

Primary references