{"id":"CVE-2021-32821","details":"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.","aliases":["GHSA-v63q-hgqc-qvpg"],"modified":"2026-08-18T14:05:17.027837Z","published":"2023-01-03T17:15:10.210Z","references":[{"type":"EVIDENCE","url":"https://securitylab.github.com/advisories/GHSL-2020-345-redos-mootools/"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mootools/mootools-core","events":[{"introduced":"0"},{"last_affected":"4501a2979f49156e2375808e1b3cbdb6ecaed849"}],"database_specific":{"cpe":"cpe:2.3:a:mootools:mootools:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"last_affected":"1.6.0"}],"source":"CPE_RANGE"}}],"versions":["1.6.0","1.5.2","1.5.1","1.5.0","1.4.1","1.4.0","1.3.2","1.3.1","1.3","1.2.4","1.2.2","1.2.1","1.2","1.20","1.2.0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-32821.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}