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CVE-2025-69223

Good to know:

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Date: January 5, 2026

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.

Severity Score

Related Resources (5)

https://github.com/aio-libs/aiohttp/commit/2b920c39002cee0ec5b402581779bbaaf7c9138a
https://github.com/aio-libs/aiohttp/security/advisories/GHSA-6mq8-rvhq-8wgg
https://github.com/aio-libs/aiohttp
https://nvd.nist.gov/vuln/detail/CVE-2025-69223
https://www.mend.io/vulnerability-database/CVE-2025-69223

Severity Score

Weakness Type (CWE)

Improper Handling of Highly Compressed Data (Data Amplification)

CWE-409

Allocation of Resources Without Limits or Throttling

CWE-770

Top Fix

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Upgrade Version

Upgrade to version aiohttp - 3.13.3;https://github.com/aio-libs/aiohttp.git - v3.13.3

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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