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Allocation of Resources Without Limits or Throttling


Severity High
Score 7.5/10


An issue was discovered in Django in version 3.2.x prior to 3.2.23, 4.1.x prior to 4.1.13, and 4.2.x prior to 4.2.7. The NFKC normalization is slow on Windows. As a consequence, django.contrib.auth.forms.UsernameField is subject to a potential DoS (denial of service) attack via certain inputs with a very large number of Unicode characters.

  • LOW
  • NONE
  • NONE
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  • NONE
  • HIGH

CWE-770 - Allocation of Resources Without Limits or Throttling

The software allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.

Advisory Timeline

  • Published