CVE-2025-69225

EUVD-2026-1047
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.
HTTP Request/Response Smuggling
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.3 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 13%
Affected Products (NVD)
VendorProductVersion
aiohttpaiohttp
𝑥
< 3.13.3
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
python-aiohttp
bookworm
vulnerable
bookworm (security)
vulnerable
bullseye
vulnerable
bullseye (security)
vulnerable
forky
3.13.3-3
fixed
sid
3.13.3-3
fixed
trixie
vulnerable
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
python-aiohttp
bionic
Fixed 3.0.1-1ubuntu0.1~esm6
released
focal
Fixed 3.6.2-1ubuntu1+esm5
released
jammy
Fixed 3.8.1-4ubuntu0.2+esm2
released
noble
Fixed 3.9.1-1ubuntu0.1+esm2
released
plucky
ignored
questing
Fixed 3.11.16-1ubuntu0.1
released
xenial
not-affected
Common Weakness Enumeration
References
https://github.com/aio-libs/aiohttp/commit/c7b7a044f88c71cefda95ec75cdcfaa4792b3b96
https://github.com/aio-libs/aiohttp/security/advisories/GHSA-mqqc-3gqh-h2x8