An issue was discovered in Django 2.2 before 2.2.26, 3.2 before 3.2.11, and 4.0 before 4.0.1. UserAttributeSimilarityValidator incurred significant overhead in evaluating a submitted password that was artificially large in relation to the comparison values. In a situation where access to user registration was unrestricted, this provided a potential vector for a denial-of-service attack.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Django | Djangoproject | 2.2 (including) | 2.2.26 (excluding) |
| Django | Djangoproject | 3.2 (including) | 3.2.11 (excluding) |
| Django | Djangoproject | 4.0 (including) | 4.0.1 (excluding) |