CVE-2026-111750
Published:October 19, 2026
Updated:October 20, 2026
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, the pure Python parser accepts ambiguous HTTP request framing. An unauthenticated attacker can consequently smuggle requests when an application uses AIOHTTP_NO_EXTENSIONS or otherwise runs without a standard wheel and an intermediary interprets the framing differently. This issue is fixed in version 3.14.4.
Affected Packages
aiohttp (CONDA):
Affected version(s) >=3.9.0 <3.14.4Fix Suggestion:
Update to version 3.14.4https://github.com/aio-libs/aiohttp.git (GITHUB):
Affected version(s) >=v3.9.0b1 <v3.14.4Fix Suggestion:
Update to version v3.14.4aiohttp (PYTHON):
Affected version(s) >=3.9.0b1 <3.14.4Fix Suggestion:
Update to version 3.14.4Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
LOW
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
LOW
Subsequent System Availability
LOW
CVSS v3
Base Score:
7.2
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
LOW
Availability
LOW
Weakness Type (CWE)
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')