Security Advisory

CVE-2026-59881

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-07-30 17:34:32

Last updated 2026-07-30 18:35:40

Assigner GitHub_M

CVSS score not scored

State PUBLISHED

Description

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.2, the WebSocket client accepts and decompresses frames with the RSV1 bit set even when the permessage-deflate extension was not negotiated, allowing a malicious server to cause unexpected CPU and memory consumption. This issue is fixed in version 3.14.2.

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