HIGH7.5

PYSEC-2026-2108

Quick fix

PYSEC-2026-2108 — aiohttp: upgrade to the fixed version with the command below.

pip install --upgrade 'aiohttp>=3.14.1'

Details

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, if an attacker sends large incomplete websocket frame payloads, it may be possible to bypass the usual size limits on memory use. This vulnerability is fixed in 3.14.1.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI/aiohttp

Introduced in: 0Fixed in: 3.14.1

Fixpip install --upgrade 'aiohttp>=3.14.1'

References

https://github.com/aio-libs/aiohttp/security/advisories/GHSA-xcgm-r5h9-7989[ADVISORY]
https://github.com/aio-libs/aiohttp/commit/14b6ee851fb16ec199acb950de0c82d476799e7d[FIX]