[ CVE-2026-111063 · Published 19 Oct 2026 ]

AIOHTTP: Secure attribute not enforced for shared cookie

CVSS 6.3 EPSS <1%Fix available

[ Description ]Official description

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, the Secure attribute for a shared cookie is not enforced. An attacker can consequently cause a shared cookie marked Secure to be sent with an unencrypted request. This issue is fixed in version 3.14.4.

[ Fixes ]Fixes and patches

  • aiohttp 3.14.4Fixed version · GitHub Advisories · pip package aiohttp: upgrade to 3.14.4 or later (affected <= 3.14.3)

[ Packages ]Affected open-source packages