{"id":"CVE-2021-28002","details":"A persistent cross-site scripting vulnerability was discovered in the Excerpt parameter in Textpattern CMS 4.9.0 which allows remote attackers to execute arbitrary code via a crafted payload entered into the URL field. The vulnerability is triggered by users visiting the 'Articles' page.","modified":"2026-07-08T21:26:27.690763Z","published":"2021-08-19T14:39:31.757Z","references":[{"type":"ADVISORY","url":"https://www.linkedin.com/in/tushar-vaidya-2111s5/"},{"type":"EVIDENCE","url":"https://www.exploit-db.com/exploits/49617"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/textpattern/textpattern","events":[{"introduced":"61f5e46ffa39394b0af15be3fcf2102be06816a9"},{"last_affected":"61f5e46ffa39394b0af15be3fcf2102be06816a9"}],"database_specific":{"cpe":"cpe:2.3:a:textpattern:textpattern:4.9.0:*:*:*:*:*:*:*","extracted_events":[{"introduced":"4.9.0"},{"last_affected":"4.9.0"}],"source":"CPE_STRING"}}],"versions":["4.9.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-28002.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"}]}