PYSEC-2026-2108

At a glance

Published: 2026-06-22 18:16 UTC
Updated: 2026-07-13 07:15 UTC
CVE: CVE-2026-54274
Aliases: GHSA-xcgm-r5h9-7989
CVSS_V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

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.

Affected packages

Package	Versions
PyPI · aiohttp	introduced 0, fixed 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

Sources

Source	Licence
OSV.dev	CC-BY 4.0 — PyPA Advisory Database