{"id":"PYSEC-2026-875","summary":"OpenStack Compute (Nova) vulnerable to denial of service via XML Entity Expansion attack","details":"The security group extension in OpenStack Compute (Nova) Grizzly 2013.1.3, Havana before havana-3, and earlier allows remote attackers to cause a denial of service (resource consumption and crash) via an XML Entity Expansion (XEE) attack.  NOTE: this issue is due to an incomplete fix for CVE-2013-1664.","aliases":["CVE-2013-4179","GHSA-j6xh-q826-55jw"],"modified":"2026-07-07T11:45:48.805422700Z","published":"2026-07-06T08:03:26.993196Z","references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2013-4179"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2013:1199"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2013-4179"},{"type":"WEB","url":"https://bugs.launchpad.net/ossa/+bug/1190229"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=989707"},{"type":"PACKAGE","url":"https://opendev.org/openstack/nova"},{"type":"WEB","url":"http://rhn.redhat.com/errata/RHSA-2013-1199.html"},{"type":"WEB","url":"http://www.ubuntu.com/usn/USN-2005-1"},{"type":"PACKAGE","url":"https://pypi.org/project/nova"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-j6xh-q826-55jw"}],"affected":[{"package":{"name":"nova","ecosystem":"PyPI","purl":"pkg:pypi/nova"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2013.2"}]}],"versions":["15.1.5","16.1.6","16.1.7","16.1.8","17.0.10","17.0.11","17.0.12","17.0.13","17.0.7","17.0.8","17.0.9","18.0.2","18.0.3","18.1.0","18.2.0","18.2.1","18.2.2","18.2.3","18.3.0","19.0.0","19.0.0.0rc1","19.0.0.0rc2","19.0.1","19.0.2","19.0.3","19.1.0","19.2.0","19.3.0","19.3.1","19.3.2","20.0.0","20.0.0.0rc1","20.0.0.0rc2","20.0.1","20.1.0","20.1.1","20.2.0","20.3.0","20.4.0","20.4.1","20.5.0","20.6.0","20.6.1","21.0.0","21.0.0.0rc1","21.0.0.0rc2","21.1.0","21.1.1","21.1.2","21.2.0","21.2.1","21.2.2","21.2.3","21.2.4","22.0.0","22.0.0.0rc1","22.0.1","22.1.0","22.2.0","22.2.1","22.2.2","22.3.0","22.4.0","23.0.0","23.0.0.0rc1","23.0.0.0rc2","23.0.1","23.0.2","23.1.0","23.2.0","23.2.1","23.2.2","24.0.0","24.0.0.0rc1","24.0.0.0rc2","24.1.0","24.1.1","24.2.0","24.2.1","25.0.0","25.0.0.0rc1","25.0.1","25.1.0","25.1.1","25.2.0","25.2.1","25.3.0","26.0.0","26.0.0.0rc1","26.0.0.0rc2","26.1.0","26.1.1","26.2.0","26.2.1","26.2.2","26.3.0","27.0.0","27.0.0.0rc1","27.1.0","27.2.0","27.3.0","27.4.0","27.5.0","27.5.1","28.0.0","28.0.0.0rc1","28.0.1","28.1.0","28.2.0","28.3.0","28.3.1","29.0.0","29.0.0.0rc1","29.0.1","29.0.2","29.1.0","29.2.0","29.2.1","29.2.2","29.3.0","29.4.0","30.0.0","30.0.0.0rc1","30.1.0","30.2.0","30.2.1","30.3.0","31.0.0","31.0.0.0rc1","31.0.1","31.1.0","31.2.0","31.3.0","31.3.1","32.0.0","32.0.0.0rc1","32.1.0","32.2.0","32.2.1","33.0.0","33.0.0.0rc1","33.0.1","33.0.2"],"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/nova/PYSEC-2026-875.yaml"}}],"schema_version":"1.7.5"}