Aiohttp
CVE-2024-52304
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V4 - API and Web Service HTTP request consistency
|
| Impact | CVSS score of 6.3 (MEDIUM). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. |
| Exploit ScenarioDerived | A remote attacker could manipulate HTTP request interpretation between frontend and backend servers by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability. |
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Alert meAnalysisAI
aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Rated medium severity (CVSS 6.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This HTTP Request/Response Smuggling vulnerability could allow attackers to manipulate HTTP request interpretation between frontend and backend servers.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Enforce strict HTTP parsing, normalize requests at proxy layer, use HTTP/2 end-to-end, reject ambiguous headers.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in pypi
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as HTTP Request/Response Smuggling (CWE-444), which allows attackers to manipulate HTTP request interpretation between frontend and backend servers. 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. Affected products include: Aiohttp. Version information: version 3.10.11.
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Severity by source
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
Primary rating from Vendor (github) · only source for this CVE.
CVSS VectorVendor: github
DescriptionCVE.org
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.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
How this decision was reached
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What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
HTTP request smuggling exploits inconsistencies in how front-end and back-end servers parse HTTP message boundaries.
Affected Products (CPE)CVE.org
aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Rated high severity (CVSS 7.5), this vul
aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Rated high severity (CVSS 7.5), this vul
Out-of-bounds heap read in aiohttp's C HTTP response parser (versions ≤ 3.14.2) allows an attacker-controlled server to
Uncontrolled decompression in aiohttp's WebSocket client prior to version 3.14.2 allows a malicious server to exhaust CP
aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Rated medium severity (CVSS 6.5), this v
HTTP request smuggling in aiohttp's server-side parser allows unauthenticated remote attackers to inject and misdirect H
AIOHTTP 3.8.1 can report a "ValueError: Invalid IPv6 URL" outcome, which can lead to a Denial of Service (DoS). Rated me
aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Rated medium severity (CVSS 5.3), this v
aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Rated medium severity (CVSS 5.3), this v
aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Rated high severity (CVSS 8.7), this vul
Idle or half-open connections to aiohttp server deployments at version 3.14.3 and earlier are never timed out during the
Unauthenticated remote attackers can exhaust file descriptors in aiohttp-based web services by sending crafted multipart
Exploit-DB