AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.2, the WebSocket client accepts and decompresses frames with the RSV1 bit set even when the permessage-deflate extension was not negotiated, allowing a malicious server to cause unexpected CPU and memory consumption. This issue is fixed in version 3.14.2.
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History
Thu, 30 Jul 2026 20:00:00 +0000
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Aio-libs
Aio-libs aiohttp |
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Aio-libs
Aio-libs aiohttp |
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ssvc
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| Description | AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.2, the WebSocket client accepts and decompresses frames with the RSV1 bit set even when the permessage-deflate extension was not negotiated, allowing a malicious server to cause unexpected CPU and memory consumption. This issue is fixed in version 3.14.2. | |
| Title | AIOHTTP: WebSocket client accepts compressed frames without negotiated permessage-deflate | |
| Weaknesses | CWE-20 | |
| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-07-30T18:35:40.624Z
Reserved: 2026-07-07T16:40:07.982Z
Link: CVE-2026-59881
Updated: 2026-07-30T18:35:37.697Z
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OpenCVE Enrichment
Updated: 2026-07-30T19:45:06Z