GitHub Advisoryadvisory · PyPI

GHSA-jh3w-4vvf-mjgr Django has regular expression denial of service vulnerability in EmailValidator/URLValidator

HIGH Published 2023-07-03 Modified 2025-11-04 Official page ↗
Aliases
CVE-2023-36053
Ecosystem
PyPI
Packages
Django
Severity
High
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-1333
Reviewed
2023-07-05

Affected packages

• PyPI Django: >= 3.2a1, < 3.2.20 → fixed in 3.2.20 • PyPI Django: >= 4.0a1, < 4.1.10 → fixed in 4.1.10 • PyPI Django: >= 4.2a1, < 4.2.3 → fixed in 4.2.3

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.

Related

Alias · CVE (1)

  • CVE-2023-36053 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… vulnerability

Weakness · CWE (1)

  • CWE-1333 Inefficient Regular Expression Complexity weakness

References