Detections
Analytics
CVE-2026-128125
medium
Description
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, Set-Cookie parsing treats unrecognized name=value attributes as additional cookies, while CookieJar does not limit the number of cookies stored or sent. A malicious server can make an aiohttp client accumulate a very large cookie set, consume memory and CPU repeatedly across redirects, and construct an excessively large Cookie header for later requests to the same domain. This issue is fixed in version 3.14.4.
References
https://github.com/aio-libs/aiohttp/security/advisories/GHSA-5pv8-vvhc-h7jv
https://github.com/aio-libs/aiohttp/releases/tag/v3.14.4
https://github.com/aio-libs/aiohttp/pull/13942
https://github.com/aio-libs/aiohttp/pull/13930
https://github.com/aio-libs/aiohttp/commit/b1f6c87b2bd3bd80f2b6c22ff46e11d00921e412
https://github.com/aio-libs/aiohttp/commit/6963ee0befec1502b6bb7b4db6c72d044c08f4fa