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python-aiohttp

Python aiohttp versions prior to 3.14.1 contain a vulnerability in the C HTTP parser that allows bypassing the max_line_size check. This can enable an attacker to send oversized HTTP request lines, potentially causing excessive memory consumption and denial of service. The issue is fixed in version 3.14.1.

AIOHTTP is an asynchronous HTTP client/server framework for Python's asyncio. Versions before 3.14.1 using the default optimized C parser have a vulnerability (CVE-2026-54277) where the max_line_size check can be bypassed in parts of an HTTP request. This allows attackers to send oversized lines through the HTTP parser, which may lead to excessive memory usage and denial of service conditions. The vulnerability is addressed in version 3.14.1.

Python aiohttp versions prior to 3.14.1 contain a vulnerability in the C HTTP parser that allows bypassing the max_line_size check. This can enable an attacker to send oversized HTTP request lines, potentially causing excessive memory consumption and denial of service. The issue is fixed in version 

Python aiohttp: Prior to 3.14.1, it is possible to bypass the max_line_size check in parts of an HTTP request in the C parser. (CVE-2026-54277)

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