{"id":"CVE-2026-123817","published":"2026-11-09T22:18:38.273","lastModified":"2026-11-09T22:18:38.273","description":"AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, the WebSocket reader retains one bytes object for each transport read while reassembling an incomplete frame. A malicious peer can split a frame into many tiny reads so per-object overhead substantially exceeds the payload bytes allowed by max_msg_size. The condition affects a server receiving frames from a malicious client and a client receiving frames from a malicious server, and can cause excessive memory consumption or denial of service. This issue is fixed in version 3.14.4.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-770"],"vendors":[],"products":[],"references":[{"url":"https://github.com/aio-libs/aiohttp/commit/09bcaa73ff084a0c539bbf16a0a78743acb7141f","tags":[]},{"url":"https://github.com/aio-libs/aiohttp/commit/6a4f6682817839313b04b8e5cea2b39c1a88ab4f","tags":[]},{"url":"https://github.com/aio-libs/aiohttp/pull/13352","tags":[]},{"url":"https://github.com/aio-libs/aiohttp/pull/13612","tags":[]},{"url":"https://github.com/aio-libs/aiohttp/releases/tag/v3.14.4","tags":[]},{"url":"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-2g87-pp6c-29x5","tags":[]}],"exploitRefs":[{"url":"https://github.com/aio-libs/aiohttp/commit/09bcaa73ff084a0c539bbf16a0a78743acb7141f","tags":[]},{"url":"https://github.com/aio-libs/aiohttp/commit/6a4f6682817839313b04b8e5cea2b39c1a88ab4f","tags":[]},{"url":"https://github.com/aio-libs/aiohttp/pull/13352","tags":[]},{"url":"https://github.com/aio-libs/aiohttp/pull/13612","tags":[]},{"url":"https://github.com/aio-libs/aiohttp/releases/tag/v3.14.4","tags":[]},{"url":"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-2g87-pp6c-29x5","tags":[]}],"hasPoc":true,"ai":null}