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CVE-2025-69223— AIOHTTP's HTTP Parser auto_decompress feature is vulnerable to zip bomb

Quick assessment

Affected
aio-libs aiohttp
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

aiohttp是aio-libs开源的一个开源的用于 asyncio 和 Python 的异步 HTTP 客户端/服务器框架。 aiohttp 3.13.2及之前版本存在安全漏洞，该漏洞源于zip炸弹可导致服务器内存耗尽，可能导致拒绝服务攻击。

CVSS 7.5 · High EPSS 0.51% · P41

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
aio-libs aiohttp < 3.13.3 affected
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I. Basic Information for CVE-2025-69223

Vulnerability Information
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Vulnerability Title
AIOHTTP's HTTP Parser auto_decompress feature is vulnerable to zip bomb
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对高度压缩数据的处理不恰当(数据放大攻击)
Source: CVE Program / CVE List V5
Vulnerability Title
aiohttp 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
aiohttp是aio-libs开源的一个开源的用于 asyncio 和 Python 的异步 HTTP 客户端/服务器框架。 aiohttp 3.13.2及之前版本存在安全漏洞，该漏洞源于zip炸弹可导致服务器内存耗尽，可能导致拒绝服务攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
aio-libs aiohttp < 3.13.3 -

II. Public POCs for CVE-2025-69223

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Qwen3.6-35B-A3B · 6981 chars
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III. Intelligence Information for CVE-2025-69223

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Patches & Fixes for CVE-2025-69223 (1)

Vendor Advisories for CVE-2025-69223 (1)

Same Patch Batch · aio-libs · 2026-01-05 · 8 CVEs total

CVE-2025-69230 AIOHTTP Vulnerable to Cookie Parser Warning Storm
CVE-2025-69227 AIOHTTP vulnerable to DoS when bypassing asserts
CVE-2025-69226 AIOHTTP allows for a brute-force leak of internal static filepath components
CVE-2025-69229 AIOHTTP vulnerable to DoS through chunked messages
CVE-2025-69225 AIOHTTP Regex Mismatch Allows Unicode in ASCII-Only Protocol Fields
CVE-2025-69224 AIOHTTP's Unicode processing of header values could cause parsing discrepancies
CVE-2025-69228 AIOHTTP vulnerable to denial of service through large payloads

IV. Related Vulnerabilities

Same product: aiohttp
Same vendor: aio-libs
Same weakness: CWE-409

V. Comments for CVE-2025-69223

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