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Moderate severityNVD Advisory· Published Nov 18, 2024· Updated Nov 19, 2024

aiohttp memory leak when middleware is enabled when requesting a resource with a non-allowed method

CVE-2024-52303

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.

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
aiohttpPyPI
>= 3.10.6, < 3.10.113.10.11

Affected products

25

Patches

Vulnerability mechanics

References

4

News mentions

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