CVE-2026-54275
Fixed in a distro release EPSS <1%CVSS 2.7
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, the server_hostname TLS SNI check can be bypassed when an existing connection is reused. If an application makes multiple requests to the same domain, but with different per-request server_hostname parameters, then the later calls may succeed by reusing the existing connection when they should have been rejected due to the TLS SNI check. This vulnerability is fixed in 3.14.1.
Products: aio-libs aiohttp
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| PyPI | aiohttp | 3.14.1 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Chainguard | airflow-2 | no fix |
| Chainguard | airflow-3 | 3.3.1-r0 |
| Chainguard | airflow-3 | 3.2.2-r7 |
| Chainguard | airflow-core-2 | 2.11.2-r6 |
| Chainguard | apache-beam-python-3.11-sdk | 2.74.0-r3 |
| Chainguard | apache-beam-python-3.12-sdk | 2.74.0-r1 |
| Chainguard | apache-beam-python-3.13-sdk | 2.74.0-r1 |
| Chainguard | authentik-2025.12 | 2025.12.6-r3 |
| Chainguard | authentik-2026.2 | 2026.2.4-r4 |
| Chainguard | authentik-fips-2025.12 | 2025.12.6-r2 |
| Chainguard | authentik-fips-2026.2 | 2026.2.4-r3 |
| Chainguard | awx | 24.6.1-r42 |
| Chainguard | dask-kubernetes-fips | 2026.3.0-r4 |
| Chainguard | lmcache-cuda-12.8 | 0.5.3-r0 |
| Chainguard | metaflow-service-fips | 2.5.0-r5 |
| Chainguard | mlflow | 3.13.0-r1 |
| Chainguard | mlflow | 3.16.0-r0 |
| Chainguard | mlflow-fips | 3.13.0-r1 |
| Chainguard | open-webui | 0.9.6-r5 |
| Chainguard | py3.10-vllm-cuda-12.4 | 0.18.1-r3 |
| Chainguard | py3.10-vllm-cuda-12.9 | 0.19.1-r0 |
| Chainguard | py3.10-vllm-cuda-13.0 | 0.20.2-r1 |
| Chainguard | py3.12-vllm-cuda-12.4 | 0.18.1-r3 |
| Chainguard | py3.12-vllm-cuda-12.9 | 0.19.1-r0 |
| Chainguard | py3.12-vllm-cuda-13.0 | 0.20.2-r1 |
| Chainguard | py3.13-scanner-test-libraries-aiohttp | 0.0.1-r3 |
| Chainguard | py3.13-vllm-cuda-12.9 | 0.19.1-r0 |
| Chainguard | py3.13-vllm-cuda-13.0 | 0.20.2-r1 |
| Chainguard | request-1276 | 0.29.0-r1 |
| Chainguard | text-generation-inference | 3.3.7-r16 |
| Chainguard | tritonserver-backend-vllm-cuda-12.9 | 25.9.0_git20260617-r2 |
| Chainguard | tritonserver-backend-vllm-cuda-12.9 | 25.9.0_git20260617-r0 |
| Chainguard | tritonserver-backend-vllm-cuda-13.0 | 25.11-r9 |
| Debian 13 | python-aiohttp | no fix |
| Debian 14 | python-aiohttp | 3.14.1-1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | python-aiohttp | 3.9.3-150400.10.43.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | python-aiohttp | 3.9.3-150400.10.43.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | python-aiohttp | 3.9.3-150400.10.43.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | python-aiohttp | 3.9.3-150400.10.43.1 |
| SUSE Linux Enterprise Module for Public Cloud 15 SP4 | python-aiohttp | 3.9.3-150400.10.43.1 |
| SUSE Linux Enterprise Module for Public Cloud 15 SP4 | python-aiohttp | 3.6.0-150100.3.38.1 |
| SUSE Linux Enterprise Module for Public Cloud 15 SP5 | python-aiohttp | 3.6.0-150100.3.38.1 |
| SUSE Linux Enterprise Module for Public Cloud 15 SP6 | python-aiohttp | 3.6.0-150100.3.38.1 |
| SUSE Linux Enterprise Module for Public Cloud 15 SP7 | python-aiohttp | 3.6.0-150100.3.38.1 |
| SUSE Linux Enterprise Module for Python 3 15 SP7 | python-aiohttp | 3.9.3-150400.10.43.1 |
| SUSE Linux Enterprise Server 15 SP4-LTSS | python-aiohttp | 3.9.3-150400.10.43.1 |
| SUSE Linux Enterprise Server 15 SP5-LTSS | python-aiohttp | 3.9.3-150400.10.43.1 |
| SUSE Linux Enterprise Server 15 SP6-LTSS | python-aiohttp | 3.9.3-150400.10.43.1 |
| SUSE Linux Enterprise Server 16.0 | python-aiohttp | 3.11.16-160000.6.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | python-aiohttp | 3.9.3-150400.10.43.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | python-aiohttp | 3.9.3-150400.10.43.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | python-aiohttp | 3.9.3-150400.10.43.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | python-aiohttp | 3.11.16-160000.6.1 |
| Ubuntu 25.10 | python-aiohttp | no fix |
| Ubuntu 26.10 | python-aiohttp | no fix |
| Ubuntu Pro 16.04 LTS | python-aiohttp | no fix |
| Ubuntu Pro 18.04 LTS | python-aiohttp | no fix |
| Ubuntu Pro 20.04 LTS | python-aiohttp | no fix |
| Ubuntu Pro 22.04 LTS | python-aiohttp | no fix |
| Ubuntu Pro 24.04 LTS | python-aiohttp | no fix |
| Ubuntu Pro 26.04 LTS | python-aiohttp | no fix |
| Wolfi | airflow-3 | 3.2.2-r7 |
| Wolfi | airflow-3 | 3.3.1-r0 |
| Wolfi | mlflow | 3.13.0-r1 |
| Wolfi | mlflow | 3.16.0-r0 |
| Wolfi | open-webui | 0.9.6-r5 |
| openSUSE Leap 16.0 | python-aiohttp | 3.11.16-160000.6.1 |
| openSUSE Tumbleweed | python-aiohttp | 3.14.1-1.1 |