{"id":"CVE-2015-5963","aliases":["GHSA-pgxh-wfw4-jx2v","PYSEC-2015-22"],"url":"https://o3.security/vulnerability/CVE-2015-5963","summary":"Django denial of service via empty session record creation","details":"contrib.sessions.middleware.SessionMiddleware in Django 1.8.x before 1.8.4, 1.7.x before 1.7.10, 1.4.x before 1.4.22, and possibly other versions allows remote attackers to cause a denial of service (session store consumption or session record removal) via a large number of requests to contrib.auth.views.logout, which triggers the creation of an empty session record.","published":"2015-08-24T14:59:08Z","modified":"2026-07-15T10:14:38.595331630Z","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":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"django","fixedVersion":"1.8.4"},{"ecosystem":"PyPI","name":"django","fixedVersion":"1.7.10"},{"ecosystem":"PyPI","name":"django","fixedVersion":"1.4.22"}],"fix":{"url":"https://github.com/django/django/commit/2eb86b01d7b59be06076f6179a454d0fd0afaff6","label":"django/django@2eb86b0"},"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://access.redhat.com/errata/RHSA-2015:1876"},{"type":"ADVISORY","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://lists.opensuse.org/opensuse-updates/2015-09/msg00026.html"},{"type":"WEB","url":"http://lists.opensuse.org/opensuse-updates/2015-09/msg00035.html"},{"type":"WEB","url":"http://www.securityfocus.com/bid/76428"},{"type":"WEB","url":"http://www.securitytracker.com/id/1033318"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2015-5963"},{"type":"WEB","url":"https://github.com/django/django/commit/2eb86b01d7b59be06076f6179a454d0fd0afaff6"},{"type":"WEB","url":"https://github.com/django/django/commit/2f5485346ee6f84b4e52068c04e043092daf55f7"},{"type":"WEB","url":"https://github.com/django/django/commit/575f59f9bc7c59a5e41a081d1f5f55fc859c5012"},{"type":"WEB","url":"https://github.com/django/django/commit/8cc41ce7a7a8f6bebfdd89d5ab276cd0109f4fc5"},{"type":"PACKAGE","url":"https://github.com/django/django"},{"type":"WEB","url":"https://github.com/django/django/blob/4555a823fd57e261e1b19c778429473256c8ea08/docs/releases/1.8.4.txt#L9-L21"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2015-22.yaml"},{"type":"WEB","url":"https://web.archive.org/web/20150904151934/http://www.securitytracker.com/id/1033318"},{"type":"WEB","url":"https://web.archive.org/web/20200228050526/http://www.securityfocus.com/bid/76428"},{"type":"WEB","url":"https://www.djangoproject.com/weblog/2015/aug/18/security-releases"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T10:14:38.595331630Z"}}