CVE-2024-52304CWE-444

aiohttp vulnerable to request smuggling due to incorrect parsing of chunk extensions

Medium · published November 18, 2024

CVSS v4.0
6.3
EPSS
1%
Percentile
46.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
EPSS
0.00563 · 46.1th percentile
Weakness
CWE-444 · Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Published
2024-11-18T20:12Z
EPSS history
Timeline
  • 18 NOV 20:12Z
    aiohttp vulnerable to request smuggling due to incorrect parsing of chunk extensions
    cvelistv5