Detections
Analytics
aioHTTP < 3.12.14 Request Smuggling (CVE-2025-53643)
medium Nessus Plugin ID 242322
Synopsis
A Python library installed on the remote host is affected by a request smuggling vulnerability.Description
The version of aioHTTP installed on the remote host is prior to 3.12.14. It is, therefore, affected by a request smuggling vulnerability:- 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. (CVE-2025-53643)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Upgrade to aioHTTP version 3.12.14 or later.See Also
Plugin Details
Severity: Medium
ID: 242322
File Name: aiohttp_CVE-2025-53643.nasl
Version: 1.2
Type: local
Agent: unix
Family: Misc.
Published: 7/18/2025
Updated: 7/19/2025
Configuration: Enable thorough checks (optional)
Supported Sensors: Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: High
Score: 7.4
CVSS v2
Risk Factor: Medium
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N
CVSS Score Source: CVE-2025-53643
CVSS v3
Risk Factor: Medium
Base Score: 5.3
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS v4
Risk Factor: Medium
Base Score: 6.3
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Vulnerability Information
CPE: cpe:/a:python:aiohttp
Required KB Items: Host/nix/packages, Host/nix/Python/Packages/Enumerated
Patch Publication Date: 7/14/2025
Vulnerability Publication Date: 7/14/2025
Reference Information
CVE: CVE-2025-53643
IAVB: 2025-B-0116