Bug 2510831 (CVE-2026-69243) - CVE-2026-69243 aiohttp: AIOHTTP: HTTP Request Smuggling via WebSocket Upgrade
Summary: CVE-2026-69243 aiohttp: AIOHTTP: HTTP Request Smuggling via WebSocket Upgrade
Keywords:
Status: NEW
Alias: CVE-2026-69243
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2519531 2519530
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-03 22:03 UTC by OSIDB Bzimport
Modified: 2026-08-24 16:27 UTC (History)
75 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:59135 0 None None None 2026-08-24 16:26:18 UTC
Red Hat Product Errata RHSA-2026:59136 0 None None None 2026-08-24 16:27:14 UTC

Description OSIDB Bzimport 2026-08-03 22:03:20 UTC 
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.
Comment 3 errata-xmlrpc 2026-08-24 16:26:14 UTC 
This issue has been addressed in the following products:

  Red Hat Ansible Automation Platform 2.5 for RHEL 9
  Red Hat Ansible Automation Platform 2.5 for RHEL 8

Via RHSA-2026:59135 https://access.redhat.com/errata/RHSA-2026:59135
Comment 4 errata-xmlrpc 2026-08-24 16:27:09 UTC 
This issue has been addressed in the following products:

  Red Hat Ansible Automation Platform 2.6 for RHEL 9
  Red Hat Ansible Automation Platform 2.6 for RHEL 10

Via RHSA-2026:59136 https://access.redhat.com/errata/RHSA-2026:59136
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