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CVE-2025-53643

AIOHTTP is vulnerable to HTTP Request/Response Smuggling through incorrect parsing of chunked trailer sections PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
aio-libs / aiohttpaffected < 3.12.14

CWE

CWE-444

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.