CVE-2024-52304

aiohttp vulnerable to request smuggling due to incorrect parsing of chunk extensions

Published Nov 18, 2024 CVSS 4.0 · 6.3 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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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
History
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'}

Type Values Removed Values Added
Metrics epss

{'score': 0.00184}

epss

{'score': 0.0015}

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

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'}

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

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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Nov 3, 2025, 8:45 PM
Reserved
Nov 6, 2024, 7:00 PM
Status
Modified
Published
Nov 18, 2024, 9:15 PM
Modified
Jun 17, 2026, 8:06 AM
Severity
Moderate
Public date
Nov 18, 2024, 8:12 PM