Description
aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. In versions starting with 3.10.6 and prior to 3.10.11, a memory leak can occur when a request produces a MatchInfoError. This was caused by adding an entry to a cache on each request, due to the building of each MatchInfoError producing a unique cache entry. An attacker may be able to exhaust the memory resources of a server by sending a substantial number (100,000s to millions) of such requests. Those who use any middlewares with aiohttp.web should upgrade to version 3.10.11 to receive a patch.
Problem types
CWE-772: Missing Release of Resource after Effective Lifetime
Product status
References
github.com/...iohttp/security/advisories/GHSA-27mf-ghqm-j3j8
github.com/...ommit/bc15db61615079d1b6327ba42c682f758fa96936