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.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| Django(PyPI) | 3.2a1 | 3.2.17 | N/A |
| Django(PyPI) | 4.0a1 | 4.0.9 | N/A |
| Django(PyPI) | 4.1a1 | 4.1.6 | N/A |
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