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.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| Django(PyPI) | 3.2a1 | 3.2.20 | N/A |
| Django(PyPI) | 4.0a1 | 4.1.10 | N/A |
| Django(PyPI) | 4.2a1 | 4.2.3 | N/A |
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