{"id":"CVE-2013-1664","aliases":["GHSA-qrh7-x6fp-c2mp","PYSEC-2026-801"],"title":"XML Entity Expansion (XEE) in Django","summary":"XML Entity Expansion (XEE) in Django","severity":"medium","vendor":"django","product":"django","ecosystem":"pip","affected":["django >= 1.3.0, < 1.3.6","django >= 1.4.0, < 1.4.4"],"patched":["django 1.3.6","django 1.4.4"],"published":"2022-05-17","updated":"2026-07-07","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-qrh7-x6fp-c2mp","references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2013-1664"},{"url":"https://github.com/django/django/commit/1c60d07ba23e0350351c278ad28d0bd5aa410b40"},{"url":"https://github.com/django/django/commit/d19a27066b2247102e65412aa66917aff0091112"},{"url":"https://bugs.launchpad.net/nova/+bug/1100282"},{"url":"https://github.com/django/django"},{"url":"http://blog.python.org/2013/02/announcing-defusedxml-fixes-for-xml.html"},{"url":"http://bugs.python.org/issue17239"},{"url":"http://lists.openstack.org/pipermail/openstack-announce/2013-February/000078.html"},{"url":"http://rhn.redhat.com/errata/RHSA-2013-0657.html"},{"url":"http://rhn.redhat.com/errata/RHSA-2013-0658.html"},{"url":"http://rhn.redhat.com/errata/RHSA-2013-0670.html"},{"url":"http://ubuntu.com/usn/usn-1757-1"},{"url":"http://www.openwall.com/lists/oss-security/2013/02/19/2"},{"url":"http://www.openwall.com/lists/oss-security/2013/02/19/4"}],"tags":["osv","pip"],"epss":0.04903,"epssPercentile":0.91716,"ingestedAt":"2026-07-08T18:25:52.482Z","slug":"CVE-2013-1664","body":"## Overview\n\nThe 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.\n\n## Affected packages\n\n- `django >= 1.3.0, < 1.3.6`\n- `django >= 1.4.0, < 1.4.4`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `django 1.3.6`\n- `django 1.4.4`","depth":"sunlit","depthScore":28,"depthScoreParts":{"impact":27.5,"likelihood":1,"exploitation":0,"ransomware":0},"changes":[]}