Aiohttp · Aiohttp · CVE-2026-34513
Name of the Vulnerable Software and Affected Versions
AIOHTTP versions prior to 3.13.4
Description
AIOHTTP, an asynchronous HTTP client/server framework, is susceptible to excessive memory usage due to an unbounded DNS cache. This can potentially lead to a Denial of Service (DoS) situation if an application makes requests to a large number of hosts, causing the DNS cache to grow continuously.
Recommendations
Update to version 3.13.4 or later.