{"id":"CVE-2023-43665","aliases":["BIT-django-2023-43665","GHSA-h8gc-pgj2-vjm3","PYSEC-2023-226"],"url":"https://o3.security/vulnerability/CVE-2023-43665","summary":"Django Denial-of-service in django.utils.text.Truncator","details":"In Django 3.2 before 3.2.22, 4.1 before 4.1.12, and 4.2 before 4.2.6, the django.utils.text.Truncator chars() and words() methods (when used with html=True) are subject to a potential DoS (denial of service) attack via certain inputs with very long, potentially malformed HTML text. The chars() and words() methods are used to implement the truncatechars_html and truncatewords_html template filters, which are thus also vulnerable. NOTE: this issue exists because of an incomplete fix for CVE-2019-14232.","published":"2023-11-03T00:00:00Z","modified":"2026-08-12T03:51:33.295369082Z","cvss":{"score":5.9,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"django","fixedVersion":"3.2.22"},{"ecosystem":"PyPI","name":"django","fixedVersion":"4.1.12"},{"ecosystem":"PyPI","name":"django","fixedVersion":"4.2.6"}],"fix":{"url":"https://github.com/django/django/commit/be9c27c4d18c2e6a5be8af4e53c0797440794473","label":"django/django@be9c27c"},"references":[{"type":"WEB","url":"https://docs.djangoproject.com/en/4.2/releases/security/"},{"type":"WEB","url":"https://groups.google.com/forum/#%21forum/django-announce"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZQJOMNRMVPCN5WMIZ7YSX5LQ7IR2NY4D/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/43xxx/CVE-2023-43665.json"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HJFRPUHDYJHBH3KYHSPGULQM4JN7BMSU/"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZQJOMNRMVPCN5WMIZ7YSX5LQ7IR2NY4D/"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-43665"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20231221-0001/"},{"type":"ARTICLE","url":"http://www.openwall.com/lists/oss-security/2024/03/04/1"},{"type":"ARTICLE","url":"https://www.djangoproject.com/weblog/2023/oct/04/security-releases/"},{"type":"WEB","url":"https://github.com/django/django/commit/be9c27c4d18c2e6a5be8af4e53c0797440794473"},{"type":"WEB","url":"https://github.com/django/django/commit/c7b7024742250414e426ad49fb80db943e7ba4e8"},{"type":"WEB","url":"https://github.com/django/django/commit/ccdade1a0262537868d7ca64374de3d957ca50c5"},{"type":"WEB","url":"https://docs.djangoproject.com/en/4.2/releases/security"},{"type":"PACKAGE","url":"https://github.com/django/django"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2023-226.yaml"},{"type":"WEB","url":"https://groups.google.com/forum/#!forum/django-announce"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HJFRPUHDYJHBH3KYHSPGULQM4JN7BMSU"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZQJOMNRMVPCN5WMIZ7YSX5LQ7IR2NY4D"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HJFRPUHDYJHBH3KYHSPGULQM4JN7BMSU"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZQJOMNRMVPCN5WMIZ7YSX5LQ7IR2NY4D"},{"type":"WEB","url":"https://security.netapp.com/advisory/ntap-20231221-0001"},{"type":"WEB","url":"https://www.djangoproject.com/weblog/2023/oct/04/security-releases"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:33.295369082Z"}}