CVE-2025-69228 MEDIUM

CVE-2025-69228: AIOHTTP vulnerable to denial of service through large payloads

Vendor Aio-Libs
Product aiohttp
Weakness CWE-770 · Uncontrolled resource consumption
Published January 5, 2026
Last update January 6, 2026
View on NVD All CVEs

CVSS base score

6.6/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U

What the vulnerability does

01Description

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below allow a request to be crafted in such a way that an AIOHTTP server's memory fills up uncontrollably during processing. If an application includes a handler that uses the Request.post() method, an attacker may be able to freeze the server by exhausting the memory. This issue is fixed in version 3.13.3.

Key dates

02Disclosure timeline

January 5, 2026 CVE published
January 6, 2026 Record updated