CVE-2026-34513 — AIOHTTP: Denial of Service (DoS) via Unbounded DNS Cache in TCPConnector
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 r…
Published: 2026-04-01 · CVSS: 2.7 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7