{"cve":"CVE-2023-36053","nvd":{"published":"2023-07-03T13:15:09.737","modified":"2026-06-17T06:05:44.917","status":"Modified","description":"In Django 3.2 before 3.2.20, 4 before 4.1.10, and 4.2 before 4.2.3, EmailValidator and URLValidator are subject to a potential ReDoS (regular expression denial of service) attack via a very large number of domain name labels of emails and URLs.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-1333"],"references":["https://docs.djangoproject.com/en/4.2/releases/security/","https://groups.google.com/forum/#%21forum/django-announce","https://lists.debian.org/debian-lts-announce/2023/07/msg00022.html","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NRDGTUN4LTI6HG4TWR3JYLSFVXPZT42A/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XG5DYKPNDCEHJQ3TKPJQO7QGSR4FAYMS/"],"products":["debian:debian_linux","djangoproject:django","fedoraproject:fedora"],"source":"nvd","synced_at":"2026-10-19T21:38:30.124994567+00:00"},"epss":{"cve":"CVE-2023-36053","score":0.02978,"percentile":0.87272,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-jh3w-4vvf-mjgr","url":"https://osv.dev/vulnerability/GHSA-jh3w-4vvf-mjgr","summary":"Django has regular expression denial of service vulnerability in EmailValidator/URLValidator","modified":"2025-11-04T19:59:10.496692Z","packages":[{"ecosystem":"PyPI","name":"django","purl":"pkg:pypi/django","ranges":[">=3.2a1 <3.2.20"],"fixed":["3.2.20"]},{"ecosystem":"PyPI","name":"django","purl":"pkg:pypi/django","ranges":[">=4.0a1 <4.1.10"],"fixed":["4.1.10"]},{"ecosystem":"PyPI","name":"django","purl":"pkg:pypi/django","ranges":[">=4.2a1 <4.2.3"],"fixed":["4.2.3"]}]},{"id":"PYSEC-2023-100","url":"https://osv.dev/vulnerability/PYSEC-2023-100","summary":"","modified":"2026-06-10T17:01:02.152157540Z","packages":[{"ecosystem":"PyPI","name":"django","purl":"pkg:pypi/django","ranges":[">=4.2 <4.2.3",">=4.0 <4.1.10",">=3.2 <3.2.20"],"fixed":["4.2.3","4.1.10","3.2.20"]}]}],"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."]}