Description
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below contain parser logic which allows non-ASCII decimals to be present in the Range header. There is no known impact, but there is the possibility that there's a method to exploit a request smuggling vulnerability. This issue is fixed in version 3.13.3.
References
https://github.com/aio-libs/aiohttp/security/advisories/GHSA-mqqc-3gqh-h2x8
Vendor AdvisoryPatch
CVSS impact metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
5.3 · Medium
Information
Source identifier
Vulnerability status
Analyzed
Published
2026-01-06T00:15:47.870Z
1 week agoLast modified
2026-01-14T19:13:02.103Z
1 hour ago