CVE-2025-69228: Aiohttp

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Aiohttp Aiohttp: before 3.13.3 (fixed in 3.13.3)

Published 2026-01-06. Last modified 2026-09-30.