CVE-2025-69228
High
Description
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductAiohttp
PublishedJan 6, 2026
First seenJan 6, 2026
Weakness typeCWE-770Allocation of resources without limits
How to fix
Update
- aiohttp aiohttp3.13.3 or later
- aiohttp3.13.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| aiohttp aiohttp | v < 3.13.3 | 3.13.3 |
| aiohttpPyPI | v < 3.13.3 | 3.13.3 |
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