CVE-2026-111065
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, Max-Age processing can overflow and skip closing a connection. An attacker can consequently exhaust the connection pool temporarily until garbage collection resolves the connections. 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) >=v3.9.0rc0 <v3.14.4Fix Suggestion:
Update to version v3.14.4aiohttp (PYTHON):
Affected version(s) >=0.1 <3.14.4Fix Suggestion:
Update to version 3.14.4aiohttp (PYTHON):
Affected version(s) >=3.9.0rc0 <3.14.4Fix Suggestion:
Update to version 3.14.4Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Allocation of Resources Without Limits or Throttling
EPSS
Base Score:
0.36