{"id":"CVE-2021-3427","aliases":["GHSA-5c8p-qhch-qhx6","PYSEC-2022-256"],"url":"https://o3.security/vulnerability/CVE-2021-3427","summary":"Deluge Web-UI vulnerable to XSS through a crafted torrent file","details":"The Deluge Web-UI is vulnerable to cross-site scripting through a crafted torrent file. The the data from torrent files is not properly sanitised as it's interpreted directly as HTML. Someone who supplies the user with a malicious torrent file can execute arbitrary Javascript code in the context of the user's browser session.","published":"2022-08-26T16:15:08.803Z","modified":"2026-07-09T00:06:17.069413Z","cvss":{"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"},"epss":{"score":0.00916,"percentile":0.5701,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":2,"affectedPackages":[{"ecosystem":"PyPI","name":"deluge","fixedVersion":"2.1.0"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202210-07"},{"type":"REPORT","url":"https://groups.google.com/g/deluge-dev/c/e5zh7wT0rEg"},{"type":"FIX","url":"https://dev.deluge-torrent.org/ticket/3459"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3427"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-5c8p-qhch-qhx6"},{"type":"PACKAGE","url":"https://github.com/deluge-torrent/deluge"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/deluge/PYSEC-2022-256.yaml"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T00:06:17.069413Z"}}