{"cve":"CVE-2015-5143","nvd":{"published":"2015-07-14T17:59:06.227","modified":"2026-06-17T00:28:32.793","status":"Modified","description":"The session backends in Django before 1.4.21, 1.5.x through 1.6.x, 1.7.x before 1.7.9, and 1.8.x before 1.8.3 allows remote attackers to cause a denial of service (session store consumption) via multiple requests with unique session keys.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-399"],"references":["http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172084.html","http://lists.opensuse.org/opensuse-updates/2015-10/msg00043.html","http://lists.opensuse.org/opensuse-updates/2015-10/msg00046.html","http://rhn.redhat.com/errata/RHSA-2015-1678.html","http://rhn.redhat.com/errata/RHSA-2015-1686.html"],"products":["canonical:ubuntu_linux","debian:debian_linux","djangoproject:django","oracle:solaris"],"source":"nvd","synced_at":"2026-10-19T20:36:40.444340523+00:00"},"epss":{"cve":"CVE-2015-5143","score":0.07215,"percentile":0.94317,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-h582-2pch-3xv3","url":"https://osv.dev/vulnerability/GHSA-h582-2pch-3xv3","summary":"Django Denial-of-service by filling session store","modified":"2024-09-18T15:29:58.218788Z","packages":[{"ecosystem":"PyPI","name":"django","purl":"pkg:pypi/django","ranges":["<1.4.21"],"fixed":["1.4.21"]},{"ecosystem":"PyPI","name":"django","purl":"pkg:pypi/django","ranges":[">=1.5 <1.7.9"],"fixed":["1.7.9"]},{"ecosystem":"PyPI","name":"django","purl":"pkg:pypi/django","ranges":[">=1.8 <1.8.3"],"fixed":["1.8.3"]}]},{"id":"PYSEC-2015-20","url":"https://osv.dev/vulnerability/PYSEC-2015-20","summary":"","modified":"2023-11-08T03:57:55.905703Z","packages":[{"ecosystem":"PyPI","name":"django","purl":"pkg:pypi/django","ranges":["<1.4.21",">=1.5 <1.7.9",">=1.8 <1.8.3"],"fixed":["1.4.21","1.7.9","1.8.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}