AIOHTTP vulnerable to DoS through chunked messages

TRUNG BÌNH 5.3CVE-2025-69229 · GHSA-g84x-mcqj-x9qq · PYSEC-2026-1106 · Công bố 06/01/2026 · cập nhật 11/10/2026

Tóm tắt nhanh

CVE-2025-69229 là lỗ hổng mức TRUNG BÌNH (CVSS 5.3) ảnh hưởng aiohttp, aiohttp (aiohttp).
Xác suất bị khai thác trong 30 ngày tới (EPSS): 0.40%, cao hơn 34.7% các lỗ hổng khác.
Cách xử lý: cập nhật lên 3.13.3 hoặc mới hơn.

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
aiohttp PyPI	`< 3.13.3`	`3.13.3`
aiohttp aiohttp	`< 3.13.3`	`3.13.3`

Mô tả

Summary

Handling of chunked messages can result in excessive blocking CPU usage when receiving a large number of chunks.

Impact

If an application makes use of the request.read() method in an endpoint, it may be possible for an attacker to cause the server to spend a moderate amount of blocking CPU time (e.g. 1 second) while processing the request. This could potentially lead to DoS as the server would be unable to handle other requests during that time.

Patch: https://github.com/aio-libs/aiohttp/commit/dc3170b56904bdf814228fae70a5501a42a6c712 Patch: https://github.com/aio-libs/aiohttp/commit/4ed97a4e46eaf61bd0f05063245f613469700229

Mô tả của NVD

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. In versions 3.13.2 and below, handling of chunked messages can result in excessive blocking CPU usage when receiving a large number of chunks. If an application makes use of the request.read() method in an endpoint, it may be possible for an attacker to cause the server to spend a moderate amount of blocking CPU time (e.g. 1 second) while processing the request. This could potentially lead to DoS as the server would be unable to handle other requests during that time. This issue is fixed in version 3.13.3.