CVE-2024-52304

aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.10.11, the Python parser parses newlines in chunk extensions incorrectly which can lead to request smuggling vulnerabilities under certain conditions. If a pure Python version of aiohttp is installed (i.e. without the usual C extensions) or `AIOHTTP_NO_EXTENSIONS` is enabled, then an attacker may be able to execute a request smuggling attack to bypass certain firewalls or proxy protections. Version 3.10.11 fixes the issue.

Score

CVSS 3.1 7.5 High

Status

Modified - security-advisories@github.com

Published

2024-11-18

Last modified

2025-11-03

Weaknesses

CWE-444

Affected products

• Aiohttp (Aio-libs)
• Aiohttp (Aiohttp)
• Aiohttp (Python)

References

• https://github.com/aio-libs/aiohttp/commit/259edc369075de63e6f3a4eaade058c62af0df71
• https://github.com/aio-libs/aiohttp/security/advisories/GHSA-8495-4g3g-x7pr
• https://lists.debian.org/debian-lts-announce/2025/02/msg00002.html