CVE-2023-47627

MEDIUM

aiohttp < 3.8.6 - HTTP Request Smuggling via Header Parsing

Title source: llm
STIX 2.1

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)

Core 6

Scores

CVSS v3 5.3
EPSS 0.0085
EPSS Percentile 53.2%
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