{"id":"CVE-2022-21222","aliases":["GHSA-p28h-cc7q-c4fg"],"url":"https://o3.security/vulnerability/CVE-2022-21222","summary":"Regular Expression Denial of Service (ReDoS)","details":"The package css-what before 2.1.3 are vulnerable to Regular Expression Denial of Service (ReDoS) due to the usage of insecure regular expression in the re_attr variable of index.js. The exploitation of this vulnerability could be triggered via the parse function.","published":"2022-09-30T05:05:11.059Z","modified":"2026-07-15T01:49:21.192991723Z","cvss":{"score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"npm","name":"css-what","fixedVersion":"2.1.3"}],"fix":null,"references":[{"type":"WEB","url":"https://github.com/fb55/css-what/blob/a38effd5a8f5506d75c7f8f13cbd8c76248a3860/index.js%23L12"},{"type":"WEB","url":"https://security.snyk.io/vuln/SNYK-JS-CSSWHAT-3035488"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/21xxx/CVE-2022-21222.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-21222"},{"type":"ARTICLE","url":"https://lists.debian.org/debian-lts-announce/2023/03/msg00001.html"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T01:49:21.192991723Z"}}