Vulnerability · Published Jan 5, 2026 · Assigned by GitHub_M
CVE-2025-69230AIOHTTP Vulnerable to Cookie Parser Warning Storm
Low 2.7
In plain English
A low-severity security flaw in aiohttp from aio-libs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. In versions 3.13.2 and below, reading multiple invalid cookies can lead to a logging storm. If the cookies attribute is accessed in an application, then an attacker may be able to trigger a storm of warning-level logs using a specially crafted Cookie header. This issue is fixed in 3.13.3.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.23 | py3-aiohttp | 3.13.3-r0 | ALPINE-CVE-2025-69230 |
| Alpine:v3.24 | py3-aiohttp | 3.13.3-r0 | ALPINE-CVE-2025-69230 |
| Debian:14 | python-aiohttp | 3.13.3-1 | DEBIAN-CVE-2025-69230 |
| PyPI | aiohttp | 3.13.3 | PYSEC-2026-1105 |
| PyPI | aiohttp | 3.13.3 | GHSA-fh55-r93g-j68g |
| Ubuntu:22.04:LTS | python-aiohttp | no fix listed | UBUNTU-CVE-2025-69230 |
| Ubuntu:24.04:LTS | python-aiohttp | no fix listed | UBUNTU-CVE-2025-69230 |
| Ubuntu:25.10 | python-aiohttp | no fix listed | UBUNTU-CVE-2025-69230 |
Affected products (as reported)
Weakness: CWE-779 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:U