CVE-2023-37276

CVSS 3.1 Score 7.5 of 10 (high)

Details

Published Jul 19, 2023
Updated: Nov 22, 2023
CWE ID 444

Summary

CVE-2023-37276 impacts the aiohttp library before version 3.8.5. This asynchronous HTTP framework for Python and asyncio contains a vulnerability in the llhttp HTTP request parser used by aiohttp as a default when installed from a wheel. This issue, affecting only aiohttp as an HTTP server, can lead to HTTP request smuggling by misinterpreting HTTP header values in crafted requests. Users are advised to upgrade to version 3.8.5 or disable the llhttp HTTP request parser by setting `AIOHTTP_NO_EXTENSIONS=1` as an environment variable when installing. The pure Python implementation of aiohttp remains unaffected.

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