CVE-2025-53643
AIOHTTP is vulnerable to HTTP Request/Response Smuggling through incorrect parsing of chunked trailer sections
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AIOHTTP is vulnerable to HTTP Request/Response Smuggling through incorrect parsing of chunked trailer sections
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.
Reserved 2025-07-07 | Published 2025-07-14 | Updated 2025-07-14 | Assigner GitHub_MCWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
github.com/...iohttp/security/advisories/GHSA-9548-qrrj-x5pj
github.com/...ommit/e8d774f635dc6d1cd3174d0e38891da5de0e2b6a
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