Resource exhaustion in aiohttp - CVE-2026-69244

Vulnerability identifier: #VU139893

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-69244

CWE-ID: CWE-400

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources in C HTTP response parser. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

aiohttp
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 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
Fedora
python311-aiohttp
python-aiohttp-debugsource
python311-aiohttp-debuginfo
python-aiohttp

Install updates from vendor's website.

aiohttp - update to 3.14.3
python311-aiohttp - update to 3.9.3-150400.10.46.1
python-aiohttp-debugsource - update to 3.9.3-150400.10.46.1
python311-aiohttp-debuginfo - update to 3.9.3-150400.10.46.1
python-aiohttp - addressed in versions 3.14.3-3.fc45, 3.14.3-3.fc46

• https://github.com/aio-libs/aiohttp/security/advisories/GHSA-cq5v-8q36-5273

• Denial of service in aiohttp
• Fedora 46 update for python-aiohttp
• Fedora 45 update for python-aiohttp
• SUSE update for python-aiohttp