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CVE-2026-34516

AIOHTTP: Multipart Header Size Bypass

CVSS 6.6 MEDIUMEPSS 0.4%CWE-770
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, a response with an excessive number of multipart headers may be allowed to use more memory than intended, potentially allowing a DoS vulnerability. This issue has been patched in version 3.13.4.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U
Productos afectados
aio-libs · aiohttp

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Referencias
https://github.com/aio-libs/aiohttp/commit/8a74257b3804c9aac0bf644af93070f68f6c5a6fhttps://github.com/aio-libs/aiohttp/releases/tag/v3.13.4https://github.com/aio-libs/aiohttp/security/advisories/GHSA-m5qp-6w8w-w647