Description
aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. The HTTP parser in AIOHTTP has numerous problems with header parsing, which could lead to request smuggling. This parser is only used when AIOHTTP_NO_EXTENSIONS is enabled (or not using a prebuilt wheel). These bugs have been addressed in commit `d5c12ba89` which has been included in release version 3.8.6. Users are advised to upgrade. There are no known workarounds for these issues.
References (6)
Scores
CVSS v3
5.3
EPSS
0.0024
EPSS Percentile
46.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-444
Status
published
Products (2)
aiohttp/aiohttp
< 3.8.6
pypi/aiohttp
0 - 3.8.6PyPI
Published
Nov 14, 2023
Tracked Since
Feb 18, 2026