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Allocation of Resources Without Limits or Throttling

CVE-2026-34516

Medium
6.6/10

Summary

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Affected versions are through version 3.13.3 and 4.0.x through 4.0.0a1 , a response with an excessive number of multipart headers may be allowed to use more memory than intended, potentially allowing a DoS vulnerability. This issue has been patched in version 3.13.4.

  • LOW
  • NETWORK
  • NONE
  • UNCHANGED
  • NONE
  • NONE
  • 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.

References

Advisory Timeline

  • Published