CVE-2025-53643
Published: Jul 14, 2025
Modified: Jul 15, 2025
Description
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.12.14, the Python parser is vulnerable to a request smuggling vulnerability due to not parsing trailer sections of an HTTP request. If a pure Python version of aiohttp is installed (i.e. without the usual C extensions) or AIOHTTP_NO_EXTENSIONS is enabled, then an attacker may be able to execute a request smuggling attack to bypass certain firewalls or proxy protections. Version 3.12.14 contains a patch for this issue.
| Vendor | Product | Versions |
|---|---|---|
aio-libs | aiohttp | affected < 3.12.14 |
Weaknesses (CWE)
References
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