CVE-2025-69225

MEDIUM

aiohttp < 3.13.3 - HTTP Request Smuggling via Range Header

Title source: llm
STIX 2.1

Description

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below contain parser logic which allows non-ASCII decimals to be present in the Range header. There is no known impact, but there is the possibility that there's a method to exploit a request smuggling vulnerability. This issue is fixed in version 3.13.3.

References (2)

Core 2

Scores

CVSS v3 5.3
EPSS 0.0024
EPSS Percentile 14.3%
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 none
Automatable yes
Technical Impact partial

Details

CWE
CWE-444
Status published
Products (2)
aiohttp/aiohttp < 3.13.3
pypi/aiohttp 0 - 3.13.3PyPI
Published Jan 06, 2026
Tracked Since Feb 18, 2026