CVE-2025-69223: Aiohttp

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below allow a zip bomb to be used to execute a DoS against the AIOHTTP server. An attacker may be able to send a compressed request that when decompressed by AIOHTTP could exhaust the host's memory. This issue is fixed in version 3.13.3.

Affected products

• Aiohttp Aiohttp: before 3.13.3 (fixed in 3.13.3)

Published 2026-01-05. Last modified 2026-09-30.