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Affected Component
Analysis
python3-aiohttp
Patched
Name
CVE-2025-69229
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.
CWEs
Published Date
Updated Date
Workaround
-
Analysis#
Vulnerability Ratings#
6.6
CVSSv4
5.3
CVSSv31
NaN
other
Others affected component#
Name
Project
Project Version
Version
Status
yocto
kirkstone
3.8.6
Not Affected
Resolved with patches#
python3-aiohttp (yocto:scarthgap)
#
Title
Author
Resolve
1
Limit number of chunks before pausing reading (#11894)
Sam Bull <git@sambull.org>
CVE-2025-69229
2
Use collections.deque for chunk splits (#11892) (#11912)
Sam Bull <git@sambull.org>
CVE-2025-69229