Security Advisory

CVE-2026-54277

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-06-22 16:37:28

Last updated 2026-06-23 16:10:22

Assigner GitHub_M

CVSS score 6.6

State PUBLISHED

Description

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. 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. If using the optimised C parser (the default in pre-built wheels), then an attacker may be able to send oversized lines through the HTTP parser and use an excessive amount of memory, potentially leading to DoS. This vulnerability is fixed in 3.14.1.

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