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Echo: aiohttp: security update to 3.14.2python-aiohttp: security update to 3.14.3-1

medium Tenable Cloud Security Plugin ID 464459

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.2, the HTTP
 parsers were vulnerable to a request smuggling attack relating to WebSocket upgrades. If using the server-
 side component, an attacker may be able to execute a request smuggling vulnerability using an edge case in
 the WebSocket upgrade procedure. A WebSocket upgrade request with a body could cause the parser to switch
 protocols before the complete request body was received, leaving trailing bytes to be handled as upgraded-
 protocol or pipelined data rather than normal HTTP body data. This issue is fixed in version 3.14.2.
 (CVE-2026-69243)

Solution

Update the aiohttp library and its related packages to version 3.14.2 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-69243

Plugin Details

Severity: Medium

ID: 464459

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

Percentile: 96.29

CVSS v2

Risk Factor: Medium

Base Score: 6.6

Temporal Score: 5.2

Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:P/A:P

CVSS Score Source: CVE-2026-69243

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.3

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS v4

Risk Factor: Medium

Base Score: 6.3

Threat Score: 2.9

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/4/2026

Vulnerability Publication Date: 8/3/2026

Reference Information

CVE: CVE-2026-69243

IAVA: 2026-A-0818