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.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/aio-libs/aiohttp/commit/c7b7a044f88c71cefda95ec75cdcfaa4792b3b96 Patch
- https://github.com/aio-libs/aiohttp/security/advisories/GHSA-mqqc-3gqh-h2x8 Patch, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 2.7 · aiohttpNVD modified 2026-10-11 20:10
Affected (CPE criteria) 1
cpe:2.3:a:aiohttp:aiohttp:*:*:*:*:*:*:*:*