aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.10.11, the Python parser parses newlines in chunk extensions incorrectly which can lead to request smuggling vulnerabilities under certain conditions. 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 3.10.11 fixes the issue.

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4041-1 python-aiohttp security update
Debian DSA Debian DSA DSA-5828-1 python-aiohttp security update
EUVD EUVD EUVD-2024-3218 aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.10.11, the Python parser parses newlines in chunk extensions incorrectly which can lead to request smuggling vulnerabilities under certain conditions. 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 3.10.11 fixes the issue.
Github GHSA Github GHSA GHSA-8495-4g3g-x7pr aiohttp allows request smuggling due to incorrect parsing of chunk extensions
Ubuntu USN Ubuntu USN USN-7642-1 AIOHTTP vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Mon, 03 Nov 2025 21:30:00 +0000

Type Values Removed Values Added
References

Fri, 15 Aug 2025 17:45:00 +0000

Type Values Removed Values Added
First Time appeared Aiohttp
Aiohttp aiohttp
CPEs cpe:2.3:a:aiohttp:aiohttp:*:*:*:*:*:*:*:*
Vendors & Products Aiohttp
Aiohttp aiohttp
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N'}

cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}


Wed, 16 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00184}

epss

{'score': 0.0015}


Thu, 13 Feb 2025 00:45:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:ansible_automation_platform:2.4::el8
cpe:/a:redhat:ansible_automation_platform:ee::el8

Fri, 20 Dec 2024 02:45:00 +0000

Type Values Removed Values Added
First Time appeared Redhat satellite
Redhat satellite Capsule
CPEs cpe:/a:redhat:satellite:6.16::el8
cpe:/a:redhat:satellite:6.16::el9
cpe:/a:redhat:satellite_capsule:6.16::el8
cpe:/a:redhat:satellite_capsule:6.16::el9
Vendors & Products Redhat satellite
Redhat satellite Capsule

Wed, 04 Dec 2024 14:45:00 +0000

Type Values Removed Values Added
First Time appeared Redhat
Redhat ansible Automation Platform
CPEs cpe:/a:redhat:ansible_automation_platform:2.5::el8
cpe:/a:redhat:ansible_automation_platform:2.5::el9
Vendors & Products Redhat
Redhat ansible Automation Platform

Fri, 22 Nov 2024 14:00:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N'}

threat_severity

Moderate


Fri, 22 Nov 2024 12:00:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 0.0, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N'}


Thu, 21 Nov 2024 14:15:00 +0000

Type Values Removed Values Added
First Time appeared Python
Python aiohttp
CPEs cpe:2.3:a:python:aiohttp:*:*:*:*:*:*:*:*
Vendors & Products Python
Python aiohttp

Tue, 19 Nov 2024 16:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 0, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 18 Nov 2024 20:30:00 +0000

Type Values Removed Values Added
Description aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.10.11, the Python parser parses newlines in chunk extensions incorrectly which can lead to request smuggling vulnerabilities under certain conditions. 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 3.10.11 fixes the issue.
Title aiohttp vulnerable to request smuggling due to incorrect parsing of chunk extensions
Weaknesses CWE-444
References
Metrics cvssV4_0

{'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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-11-03T20:45:25.646Z

Reserved: 2024-11-06T19:00:26.396Z

Link: CVE-2024-52304

cve-icon Vulnrichment

Updated: 2024-11-19T15:38:37.921Z

cve-icon NVD

Status : Modified

Published: 2024-11-18T21:15:06.500

Modified: 2025-11-03T21:17:21.180

Link: CVE-2024-52304

cve-icon Redhat

Severity : Moderate

Publid Date: 2024-11-18T20:12:48Z

Links: CVE-2024-52304 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses