{"id":"CVE-2014-9720","aliases":["GHSA-8vpw-mgpf-mpvv","PYSEC-2020-213"],"url":"https://o3.security/vulnerability/CVE-2014-9720","summary":"Tornado XSRF cookie allows side-channel attack against TLS (BREACH attack)","details":"Tornado before 3.2.2 sends arbitrary responses that contain a fixed CSRF token and may be sent with HTTP compression, which makes it easier for remote attackers to conduct a BREACH attack and determine this token via a series of crafted requests.","published":"2020-01-24T18:15:12Z","modified":"2026-04-16T06:19:38.903571478Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"tornado","fixedVersion":"3.2.2"}],"fix":{"url":"https://github.com/tornadoweb/tornado/commit/1c36307463b1e8affae100bf9386948e6c1b2308","label":"tornadoweb/tornado@1c36307"},"references":[{"type":"ADVISORY","url":"http://openwall.com/lists/oss-security/2015/05/19/4"},{"type":"ADVISORY","url":"http://www.tornadoweb.org/en/stable/releases/v3.2.2.html"},{"type":"ADVISORY","url":"https://bugzilla.novell.com/show_bug.cgi?id=930362"},{"type":"ADVISORY","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1222816"},{"type":"ARTICLE","url":"http://openwall.com/lists/oss-security/2015/05/19/4"},{"type":"FIX","url":"http://openwall.com/lists/oss-security/2015/05/19/4"},{"type":"FIX","url":"https://bugzilla.novell.com/show_bug.cgi?id=930362"},{"type":"FIX","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1222816"},{"type":"FIX","url":"https://github.com/tornadoweb/tornado/commit/1c36307463b1e8affae100bf9386948e6c1b2308"},{"type":"REPORT","url":"https://bugzilla.novell.com/show_bug.cgi?id=930362"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1222816"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-04-16T06:19:38.903571478Z"}}