{"id":"CVE-2023-23969","aliases":["BIT-django-2023-23969","GHSA-q2jf-h9jm-m7p4","PYSEC-2023-12"],"url":"https://o3.security/vulnerability/CVE-2023-23969","summary":"Django contains Uncontrolled Resource Consumption via cached header","details":"In Django 3.2 before 3.2.17, 4.0 before 4.0.9, and 4.1 before 4.1.6, the parsed values of Accept-Language headers are cached in order to avoid repetitive parsing. This leads to a potential denial-of-service vector via excessive memory usage if the raw value of Accept-Language headers is very large.","published":"2023-02-01T00:00:00Z","modified":"2026-08-12T03:51:36.635868573Z","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":{"score":0.47381,"percentile":0.98753,"asOf":"2026-08-30"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"django","fixedVersion":"3.2.17"},{"ecosystem":"PyPI","name":"django","fixedVersion":"4.0.9"},{"ecosystem":"PyPI","name":"django","fixedVersion":"4.1.6"}],"fix":null,"references":[{"type":"WEB","url":"https://docs.djangoproject.com/en/4.1/releases/security/"},{"type":"WEB","url":"https://groups.google.com/forum/#%21forum/django-announce"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/23xxx/CVE-2023-23969.json"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HWY6DQWRVBALV73BPUVBXC3QIYUM24IK/"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LTZVAKU5ALQWOKFTPISE257VCVIYGFQI/"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-23969"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20230302-0007/"},{"type":"ARTICLE","url":"https://lists.debian.org/debian-lts-announce/2023/02/msg00000.html"},{"type":"ARTICLE","url":"https://www.djangoproject.com/weblog/2023/feb/01/security-releases/"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:36.635868573Z"}}