{"id":"CVE-2015-5964","aliases":["GHSA-x38m-486c-2wr9","PYSEC-2015-23"],"url":"https://o3.security/vulnerability/CVE-2015-5964","summary":"Denial-of-service possibility in logout() view by filling session store","details":"The (1) contrib.sessions.backends.base.SessionBase.flush and (2) cache_db.SessionStore.flush functions in Django 1.7.x before 1.7.10, 1.4.x before 1.4.22, and possibly other versions create empty sessions in certain circumstances, which allows remote attackers to cause a denial of service (session store consumption) via unspecified vectors.","published":"2015-08-24T14:59:09Z","modified":"2026-04-16T06:24:51.954571242Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":{"score":0.04969,"percentile":0.91531,"asOf":"2026-08-22"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"django","fixedVersion":"1.7.10"},{"ecosystem":"PyPI","name":"django","fixedVersion":"1.4.22"}],"fix":null,"references":[{"type":"ADVISORY","url":"http://rhn.redhat.com/errata/RHSA-2015-1766.html"},{"type":"ADVISORY","url":"http://rhn.redhat.com/errata/RHSA-2015-1767.html"},{"type":"ADVISORY","url":"http://rhn.redhat.com/errata/RHSA-2015-1894.html"},{"type":"ADVISORY","url":"http://www.debian.org/security/2015/dsa-3338"},{"type":"ADVISORY","url":"http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html"},{"type":"ADVISORY","url":"http://www.ubuntu.com/usn/USN-2720-1"},{"type":"ADVISORY","url":"https://www.djangoproject.com/weblog/2015/aug/18/security-releases/"},{"type":"FIX","url":"https://www.djangoproject.com/weblog/2015/aug/18/security-releases/"},{"type":"WEB","url":"http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172084.html"},{"type":"WEB","url":"http://www.securityfocus.com/bid/76440"},{"type":"WEB","url":"http://www.securitytracker.com/id/1033318"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-04-16T06:24:51.954571242Z"}}