CVE-2024-52303: aiohttp has a memory leak when middleware is enabled when requesting a resource with a non-allowed method

November 18, 2024 (updated November 19, 2024)

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.

References

github.com/advisories/GHSA-27mf-ghqm-j3j8
github.com/aio-libs/aiohttp
github.com/aio-libs/aiohttp/commit/bc15db61615079d1b6327ba42c682f758fa96936
github.com/aio-libs/aiohttp/security/advisories/GHSA-27mf-ghqm-j3j8
nvd.nist.gov/vuln/detail/CVE-2024-52303

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