{"id":"CVE-2021-33587","aliases":["GHSA-q8pj-2vqx-8ggc"],"url":"https://o3.security/vulnerability/CVE-2021-33587","summary":"Denial of service in css-what","details":"The css-what package 4.0.0 through 5.0.0 for Node.js does not ensure that attribute parsing has Linear Time Complexity relative to the size of the input.","published":"2021-05-28T20:15:07.733Z","modified":"2026-07-09T01:25:31.486481Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"css-what","fixedVersion":"5.0.1"}],"fix":null,"references":[{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2023/03/msg00001.html"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20210706-0007/"},{"type":"FIX","url":"https://github.com/fb55/css-what/releases/tag/v5.0.1"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T01:25:31.486481Z"}}