AIOHTTP is vulnerable to HTTP Request/Response Smuggling through incorrect parsing of chunked trailer sections

CAO 7.5CVE-2025-53643 · GHSA-9548-qrrj-x5pj · PYSEC-2026-1104 · Công bố 14/07/2025 · cập nhật 17/06/2026

Tóm tắt nhanh

CVE-2025-53643 là lỗ hổng mức CAO (CVSS 7.5) ảnh hưởng aiohttp, aiohttp (aiohttp).
Xác suất bị khai thác trong 30 ngày tới (EPSS): 0.36%, cao hơn 29.3% các lỗ hổng khác.
Cách xử lý: cập nhật lên 3.12.14 hoặc mới hơn.

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
aiohttp PyPI	`< 3.12.14`	`3.12.14`
aiohttp aiohttp	`< 3.12.14`	`3.12.14`

Mô tả

Summary

The Python parser is vulnerable to a request smuggling vulnerability due to not parsing trailer sections of an HTTP request.

Impact

If a pure Python version of aiohttp is installed (i.e. without the usual C extensions) or AIOHTTP_NO_EXTENSIONS is enabled, then an attacker may be able to execute a request smuggling attack to bypass certain firewalls or proxy protections.

Patch: https://github.com/aio-libs/aiohttp/commit/e8d774f635dc6d1cd3174d0e38891da5de0e2b6a

Mô tả của NVD

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.12.14, the Python parser is vulnerable to a request smuggling vulnerability due to not parsing trailer sections of an HTTP request. If a pure Python version of aiohttp is installed (i.e. without the usual C extensions) or AIOHTTP_NO_EXTENSIONS is enabled, then an attacker may be able to execute a request smuggling attack to bypass certain firewalls or proxy protections. Version 3.12.14 contains a patch for this issue.