{"id":"CVE-2021-20683","aliases":["GHSA-v9w8-hq92-v39m"],"url":"https://o3.security/vulnerability/CVE-2021-20683","summary":"Cross-site Scripting (XSS) in baserCMS","details":"Improper neutralization of JavaScript input in the blog article editing function of baserCMS versions prior to 4.4.5 allows remote authenticated attackers to inject an arbitrary script via unspecified vectors.","published":"2021-03-26T09:15:12.167Z","modified":"2026-07-08T20:30:06.183815Z","cvss":{"score":5.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Packagist","name":"baserproject/basercms","fixedVersion":"4.4.5"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://jvn.jp/en/jp/JVN64869876/index.html"},{"type":"FIX","url":"https://basercms.net/security/JVN64869876"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T20:30:06.183815Z"}}