{"id":"CVE-2020-9447","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-9447","generatedAt":"2026-10-27T21:17:41.829Z","title":"There is an XSS (cross-site scripting) vulnerability in GwtUpload 1.0.3 in the file upload functionality.","description":"There is an XSS (cross-site scripting) vulnerability in GwtUpload 1.0.3 in the file upload functionality. Someone can upload a file with a malicious filename, which contains JavaScript code, which would result in XSS. Cross-site scripting enables attackers to steal data, change the appearance of a website, and perform other malicious activities like phishing or drive-by hacking.","published":"2020-02-28T16:15:11.000Z","lastModified":"2026-06-17T03:27:58.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":6.1,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},"cwe":["CWE-79"],"affected":["gwtupload project/gwtupload"],"epss":{"score":0.00759,"percentile":0.54992,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.76%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/manolo/gwtupload/issues/32","tags":["Exploit","Issue Tracking","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://www.coresecurity.com/advisories/gwtupload-xss-file-upload-functionality","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/manolo/gwtupload/issues/32","tags":["Exploit","Issue Tracking","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.coresecurity.com/advisories/gwtupload-xss-file-upload-functionality","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-9447","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}