PT-2026-53020
CVE-2026-48809
·
Published
2026-06-26
·
Updated
2026-09-18
Description by
CVSS 3.1
7.5
HighMetricsAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Name of the Vulnerable Software and Affected Versions
python-engineio versions prior to 4.13.2
Description
Two specific configurations of the server fail to verify the size of incoming messages before loading them into memory, which can lead to excessive memory allocations. This occurs during POST requests when using ASGI with the long polling transport and during WebSocket messages when using Aiohttp with the WebSocket transport.
Recommendations
Update to version 4.13.2 or later.
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