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CVE-2026-111066 AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python

Description

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. From 2.0.0 until 3.14.4, multipart request processing can retain an unbounded number of open file descriptors. An unauthenticated attacker can consequently exhaust file descriptors with specially crafted multipart requests when a handler uses Request.post(). This issue is fixed in version 3.14.4.

Affected products and versions

Product Affected versions Fixed in
aiohttp 2.0 2.0.0 → < 3.14.4 3.14.4

References

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