Security Advisory

CVE-2025-69229

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-01-05 23:37:52

Last updated 2026-01-06 19:02:09

Assigner GitHub_M

State PUBLISHED

Description

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. In versions 3.13.2 and below, handling of chunked messages can result in excessive blocking CPU usage when receiving a large number of chunks. If an application makes use of the request.read() method in an endpoint, it may be possible for an attacker to cause the server to spend a moderate amount of blocking CPU time (e.g. 1 second) while processing the request. This could potentially lead to DoS as the server would be unable to handle other requests during that time. This issue is fixed in version 3.13.3.

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