Inconsistent interpretation of HTTP requests in aiohttp - CVE-2025-69225

 

Inconsistent interpretation of HTTP requests in aiohttp - CVE-2025-69225

Published: January 6, 2026


Vulnerability identifier: #VU120993
CSH Severity: Low
CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-69225
CWE-ID: CWE-444
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform HTTP request smuggling attacks.

The vulnerability exists due to the application allows non-ASCII decimals to be present in the Range header. A remote attacker can send a specially crafted HTTP request to the server and potentially smuggle arbitrary HTTP headers.



Affected software

aiohttp
SUSE Linux Enterprise Server 15 SP6
Debian Linux
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Desktop 15
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE Manager Server
Public Cloud Module
Python 3 Module
openSUSE Leap
Ubuntu
openEuler
Anolis OS
Fusion Content-Aware Storage
watsonx Code Assistant On Prem
Robotic Process Automation for Cloud Pak
IBM Fusion HCI
Splunk Enterprise
python-aiohttp (Ubuntu package)
python-aiohttp-debugsource
python3-aiohttp-debuginfo
python3-aiohttp
python-aiohttp-help
python-aiohttp-debuginfo
python-aiohttp
python311-aiohttp
python311-aiohttp-debuginfo
python3-aiohttp+speedups
python-aiohttp (Debian package)

How to mitigate CVE-2025-69225

Install updates from vendor's website.

aiohttp - update to 3.13.3
Fusion Content-Aware Storage - update to 1.1.2
IBM Fusion HCI - update to 2.12.1
watsonx Code Assistant On Prem - update to 5.3.1
Splunk Enterprise - addressed in versions 9.3.10, 9.4.9, 10.0.4, 10.2.1
Robotic Process Automation for Cloud Pak - addressed in versions 23.0.20.6, 30.0.2
python-aiohttp (Ubuntu package) - addressed in versions 3.0.1-1ubuntu0.1~esm6, 3.6.2-1ubuntu1+esm5, 3.8.1-4ubuntu0.2+esm2, 3.9.1-1ubuntu0.1+esm2, 3.11.16-1ubuntu0.1
python-aiohttp-debugsource - addressed in versions 3.6.0-150100.3.32.1, 3.9.3-150400.10.36.1
python3-aiohttp-debuginfo - update to 3.6.0-150100.3.32.1
python3-aiohttp - update to 3.6.0-150100.3.32.1
python3-aiohttp - update to 3.9.3-9
python-aiohttp-help - update to 3.9.3-9
python-aiohttp-debugsource - update to 3.9.3-9
python-aiohttp-debuginfo - update to 3.9.3-9
python-aiohttp - update to 3.9.3-9
python311-aiohttp - update to 3.9.3-150400.10.36.1
python311-aiohttp-debuginfo - update to 3.9.3-150400.10.36.1
python3-aiohttp+speedups - update to 3.9.5-3
python3-aiohttp - update to 3.9.5-3
python-aiohttp (Debian package) - update to 3.11.16-1+deb13u1

External References

Related Security Bulletins