CVE-2025-69225CWE-444

CVE-2025-69225

Medium · published January 6, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
19.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00282 · 19.7th percentile
Weakness
CWE-444 · Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Published
2026-01-06T05:15Z
Affected products (1)
ProductVersionsFixed in
aiohttp/aiohttp< 3.13.33.13.3
References (2)
https://github.com/aio-libs/aiohttp/commit/c7b7a044f88c71cefda95ec75cdcfaa4792b3b96 · [email protected]https://github.com/aio-libs/aiohttp/security/advisories/GHSA-mqqc-3gqh-h2x8 · [email protected]
EPSS history
Timeline
  • 05 JAN 23:16Z
    AIOHTTP Regex Mismatch Allows Unicode in ASCII-Only Protocol Fields
    cvelistv5