VDB
CVE-2026-69243
CVE-2026-69243
PUBLISHED
CVSS 6.3 MEDIUM
Reported by GitHub_M · Published August 3, 2026
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.2, the HTTP parsers were vulnerable to a request smuggling attack relating to WebSocket upgrades. If using the server-side component, an attacker may be able to execute a request smuggling vulnerability using an edge case in the WebSocket upgrade procedure. A WebSocket upgrade request with a body could cause the parser to switch protocols before the complete request body was received, leaving trailing bytes to be handled as upgraded-protocol or pipelined data rather than normal HTTP body data. This issue is fixed in version 3.14.2.
Risk Scores
CVSS 4.0
6.3
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| aio-libs | aiohttp | < 3.14.2 |
| aio-libs | aiohttp | < 3.14.2, < 3.14.2, < 3.14.2 |
| chainguard | kserve-models-web-app | 0, 0, 0 |
| chainguard | awx | 0, 0, 0 |
| chainguard | airflow-3 | 0, 0, 0 |
| chainguard | airflow-core-2 | 0, 0, 0 |
| wolfi | dask-kubernetes | 0, 0, 0 |
| chainguard | kserve | 0, 0, 0 |
| chainguard | open-webui | 0, 0, 0 |
| chainguard | apache-beam-python-3.11-sdk | 0, 0, 0 |
| chainguard | apache-beam-python-3.13-sdk | 0, 0, 0 |
| wolfi | kserve | 0, 0, 0 |
| chainguard | py3-vllm-cuda-12.4 | 0, 0, 0 |
| wolfi | open-webui | 0, 0, 0 |
| chainguard | dask-kubernetes-fips | 0, 0, 0 |
| PyPI | aiohttp | 0 |
| chainguard | dask-kubernetes | 0, 0, 0 |
| chainguard | puppygraph-python | 0, 0, 0 |
| chainguard | tritonserver-backend-vllm-cuda-13.0 | 0, 0, 0 |
| wolfi | airflow-3 | 0, 0, 0 |
…and 7 more
Timeline
- Aug 3, 2026 CVE Published
- Aug 3, 2026 Coalition ESS Score
- Aug 4, 2026 Security Advisory
- Aug 7, 2026 EPSS Score
- Aug 24, 2026 EPSS Score
- Aug 25, 2026 Distribution Patch
- Aug 25, 2026 Security Advisory
- Aug 25, 2026 Distribution Patch
- Aug 25, 2026 Security Advisory
- Aug 26, 2026 EPSS Score
- Aug 30, 2026 EPSS Score
- Sep 3, 2026 EPSS Score
References
- https://github.com/aio-libs/aiohttp/security/advisories/GHSA-mfx4-hv73-q22v x_refsource_CONFIRM
- https://github.com/aio-libs/aiohttp/pull/13017 x_refsource_MISC
- https://github.com/aio-libs/aiohttp/commit/6ae358f0983c3f4d6f67692b2f8e65dc8e091c98 x_refsource_MISC
- https://github.com/aio-libs/aiohttp/releases/tag/v3.14.2 x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-69243 advisory
- https://github.com/advisories/GHSA-mfx4-hv73-q22v advisory