CVE-2025-69229
Fixed in a distro release EPSS <1%CVSS 6.6
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. In versions 3.13.2 and below, handling of chunked messages can result in excessive blocking CPU usage when receiving a large number of chunks. If an application makes use of the request.read() method in an endpoint, it may be possible for an attacker to cause the server to spend a moderate amount of blocking CPU time (e.g. 1 second) while processing the request. This could potentially lead to DoS as the server would be unable to handle other requests during that time. This issue is fixed in version 3.13.3.
Products: aio-libs aiohttp
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| PyPI | aiohttp | 3.13.3 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Chainguard | airflow-2 | 2.11.0-r19 |
| Chainguard | airflow-2-bitnami-compat | 2.11.0-r19 |
| Chainguard | airflow-2-compat | 2.11.0-r19 |
| Chainguard | airflow-2-iamguarded-compat | 2.11.0-r19 |
| Chainguard | airflow-3 | 3.2.0-r0 |
| Chainguard | airflow-3 | 3.1.5-r2 |
| Chainguard | airflow-3-bitnami-compat | no fix |
| Chainguard | apache-beam-python-3.11-sdk | 2.70.0-r1 |
| Chainguard | authentik | 2025.10.3-r3 |
| Chainguard | authentik-go-server | 2025.10.3-r3 |
| Chainguard | awx | 24.6.1-r23 |
| Chainguard | checkov | 3.2.499-r0 |
| Chainguard | dask-kubernetes | 2025.7.0-r4 |
| Chainguard | kserve-storage-controller | 0.17.0-r2 |
| Chainguard | kubeflow-pipelines-visualization-server | 2.15.0-r1 |
| Chainguard | open-webui | 0.6.43-r1 |
| Chainguard | py3-cassandra-medusa | 0.26.0-r3 |
| Chainguard | py3-cassandra-medusa-compat | 0.26.0-r3 |
| Chainguard | py3.10-vllm-cuda-12.4 | 0.13.0-r3 |
| Chainguard | py3.10-vllm-cuda-12.4 | 0.16.0-r1 |
| Chainguard | py3.12-vllm-cuda-12.4 | 0.16.0-r1 |
| Chainguard | py3.13-scanner-test-libraries-aiohttp | 0.0.1-r3 |
| Chainguard | request-1276 | 0.27.0-r1 |
| Debian 12 | python-aiohttp | no fix |
| Debian 13 | python-aiohttp | 3.11.16-1+deb13u1 |
| Debian 14 | python-aiohttp | 3.13.3-1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | python-aiohttp | 3.9.3-150400.10.36.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | python-aiohttp | 3.9.3-150400.10.36.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | python-aiohttp | 3.9.3-150400.10.36.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | python-aiohttp | 3.9.3-150400.10.36.1 |
| SUSE Linux Enterprise Module for Public Cloud 15 SP4 | python-aiohttp | 3.9.3-150400.10.36.1 |
| SUSE Linux Enterprise Module for Public Cloud 15 SP4 | python-aiohttp | 3.6.0-150100.3.32.1 |
| SUSE Linux Enterprise Module for Public Cloud 15 SP5 | python-aiohttp | 3.6.0-150100.3.32.1 |
| SUSE Linux Enterprise Module for Public Cloud 15 SP6 | python-aiohttp | 3.6.0-150100.3.32.1 |
| SUSE Linux Enterprise Module for Public Cloud 15 SP7 | python-aiohttp | 3.6.0-150100.3.32.1 |
| SUSE Linux Enterprise Module for Python 3 15 SP7 | python-aiohttp | 3.9.3-150400.10.36.1 |
| SUSE Linux Enterprise Server 15 SP4-LTSS | python-aiohttp | 3.9.3-150400.10.36.1 |
| SUSE Linux Enterprise Server 15 SP5-LTSS | python-aiohttp | 3.9.3-150400.10.36.1 |
| SUSE Linux Enterprise Server 15 SP6-LTSS | python-aiohttp | 3.9.3-150400.10.36.1 |
| SUSE Linux Enterprise Server 16.0 | python-Brotli | 1.1.0-160000.3.1 |
| SUSE Linux Enterprise Server 16.0 | python-aiohttp | 3.11.16-160000.3.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | python-aiohttp | 3.9.3-150400.10.36.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | python-aiohttp | 3.9.3-150400.10.36.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | python-aiohttp | 3.9.3-150400.10.36.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | python-Brotli | 1.1.0-160000.3.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | python-aiohttp | 3.11.16-160000.3.1 |
| Ubuntu 25.10 | python-aiohttp | 3.11.16-1ubuntu0.1 |
| Ubuntu Pro 16.04 LTS | python-aiohttp | no fix |
| Ubuntu Pro 18.04 LTS | python-aiohttp | 3.0.1-1ubuntu0.1~esm6 |
| Ubuntu Pro 20.04 LTS | python-aiohttp | 3.6.2-1ubuntu1+esm5 |
| Ubuntu Pro 22.04 LTS | python-aiohttp | 3.8.1-4ubuntu0.2+esm2 |
| Ubuntu Pro 24.04 LTS | python-aiohttp | 3.9.1-1ubuntu0.1+esm2 |
| Wolfi | airflow-3 | 3.2.0-r0 |
| Wolfi | airflow-3 | 3.1.5-r2 |
| Wolfi | airflow-3-bitnami-compat | no fix |
| Wolfi | checkov | 3.2.499-r0 |
| Wolfi | dask-kubernetes | 2025.7.0-r4 |
| Wolfi | kserve-storage-controller | 0.17.0-r2 |
| Wolfi | kubeflow-pipelines-visualization-server | 2.15.0-r1 |
| Wolfi | open-webui | 0.6.43-r1 |
| Wolfi | py3-cassandra-medusa | 0.26.0-r3 |
| Wolfi | py3-cassandra-medusa-compat | 0.26.0-r3 |
| openSUSE Leap 15.6 | python-aiohttp | 3.9.3-150400.10.36.1 |
| openSUSE Leap 16.0 | python-Brotli | 1.1.0-160000.3.1 |
| openSUSE Leap 16.0 | python-aiohttp | 3.11.16-160000.3.1 |
| openSUSE Tumbleweed | python-aiohttp | 3.13.3-1.1 |