{"id":"PYSEC-2026-801","summary":"XML Entity Expansion (XEE) in Django","details":"The XML libraries for Python, as used in OpenStack Keystone Essex, Folsom, and Grizzly; Compute (Nova) Essex and Folsom; Cinder Folsom; Django; and possibly other products allow remote attackers to cause a denial of service (resource consumption and crash) via an XML Entity Expansion (XEE) attack.","aliases":["CVE-2013-1664","GHSA-qrh7-x6fp-c2mp"],"modified":"2026-07-07T11:45:45.080373502Z","published":"2026-07-06T08:03:27.156164Z","references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2013-1664"},{"type":"WEB","url":"https://github.com/django/django/commit/1c60d07ba23e0350351c278ad28d0bd5aa410b40"},{"type":"WEB","url":"https://github.com/django/django/commit/d19a27066b2247102e65412aa66917aff0091112"},{"type":"WEB","url":"https://bugs.launchpad.net/nova/+bug/1100282"},{"type":"PACKAGE","url":"https://github.com/django/django"},{"type":"WEB","url":"http://blog.python.org/2013/02/announcing-defusedxml-fixes-for-xml.html"},{"type":"WEB","url":"http://bugs.python.org/issue17239"},{"type":"WEB","url":"http://lists.openstack.org/pipermail/openstack-announce/2013-February/000078.html"},{"type":"WEB","url":"http://rhn.redhat.com/errata/RHSA-2013-0657.html"},{"type":"WEB","url":"http://rhn.redhat.com/errata/RHSA-2013-0658.html"},{"type":"WEB","url":"http://rhn.redhat.com/errata/RHSA-2013-0670.html"},{"type":"WEB","url":"http://ubuntu.com/usn/usn-1757-1"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2013/02/19/2"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2013/02/19/4"},{"type":"PACKAGE","url":"https://pypi.org/project/django"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-qrh7-x6fp-c2mp"}],"affected":[{"package":{"name":"django","ecosystem":"PyPI","purl":"pkg:pypi/django"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.3.0"},{"fixed":"1.3.6"},{"introduced":"1.4.0"},{"fixed":"1.4.4"}]}],"versions":["1.3","1.3.1","1.3.2","1.3.3","1.3.4","1.3.5","1.4","1.4.1","1.4.2","1.4.3"],"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/django/PYSEC-2026-801.yaml"}}],"schema_version":"1.7.5"}