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2.7 Low

CVE-2026-34513 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. Prior to version 3.13.4, an unbounded DNS cache could result in excessive memory usage possibly resulting in a DoS situation. This issue has been patched in version 3.13.4.

Affected products and versions

Product Affected versions Fixed in
aiohttp 3.13 earliest → < 3.13.4 3.13.4

References

Timeline

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