SUSE-SU-2026:4031-1: moderate: Security update for python-aiohttp
SLE-SECURITY-UPDATES
null at suse.de
Mon Sep 7 12:33:50 UTC 2026
# Security update for python-aiohttp
Announcement ID: SUSE-SU-2026:4031-1
Release Date: 2026-09-07T07:46:19Z
Rating: moderate
References:
* bsc#1273125
* bsc#1273552
* bsc#1273553
Cross-References:
* CVE-2026-59881
* CVE-2026-69243
* CVE-2026-69244
CVSS scores:
* CVE-2026-59881 ( SUSE ): 6.9
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
* CVE-2026-59881 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-59881 ( NVD ): 6.9
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
* CVE-2026-69243 ( SUSE ): 6.3
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
* CVE-2026-69243 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
* CVE-2026-69243 ( NVD ): 6.3
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
* CVE-2026-69244 ( SUSE ): 7.1
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
* CVE-2026-69244 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
* CVE-2026-69244 ( NVD ): 7.1
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Affected Products:
* openSUSE Leap 15.4
* Public Cloud Module 15-SP4
* Python 3 Module 15-SP7
* SUSE Linux Enterprise Desktop 15 SP7
* SUSE Linux Enterprise High Performance Computing 15 SP4
* SUSE Linux Enterprise Server 15 SP4
* SUSE Linux Enterprise Server 15 SP7
* SUSE Linux Enterprise Server for SAP Applications 15 SP4
* SUSE Linux Enterprise Server for SAP Applications 15 SP7
* SUSE Manager Proxy 4.3
* SUSE Manager Retail Branch Server 4.3
* SUSE Manager Server 4.3
An update that solves three vulnerabilities can now be installed.
## Description:
This update for python-aiohttp fixes the following issues:
* CVE-2026-59881: excessive resource consumption due to WebSocket client
accepting compressed frames without negotiated permessage-deflate
(bsc#1273125).
* CVE-2026-69243: HTTP request smuggling via the WebSocket upgrade procedure
(bsc#1273553).
* CVE-2026-69244: out-of-bounds heap read in the C response parser while
building an error message for a malformed response (bsc#1273552).
## Patch Instructions:
To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:
* openSUSE Leap 15.4
zypper in -t patch SUSE-2026-4031=1
* Public Cloud Module 15-SP4
zypper in -t patch SUSE-SLE-Module-Public-Cloud-15-SP4-2026-4031=1
* Python 3 Module 15-SP7
zypper in -t patch SUSE-SLE-Module-Python3-15-SP7-2026-4031=1
## Package List:
* openSUSE Leap 15.4 (aarch64 i586 ppc64le s390x x86_64)
* python311-aiohttp-3.9.3-150400.10.46.1
* python-aiohttp-debugsource-3.9.3-150400.10.46.1
* python311-aiohttp-debuginfo-3.9.3-150400.10.46.1
* Python 3 Module 15-SP7 (aarch64 ppc64le s390x x86_64)
* python311-aiohttp-3.9.3-150400.10.46.1
* python-aiohttp-debugsource-3.9.3-150400.10.46.1
* python311-aiohttp-debuginfo-3.9.3-150400.10.46.1
* Public Cloud Module 15-SP4 (aarch64 ppc64le s390x x86_64)
* python311-aiohttp-3.9.3-150400.10.46.1
## References:
* https://www.suse.com/security/cve/CVE-2026-59881.html
* https://www.suse.com/security/cve/CVE-2026-69243.html
* https://www.suse.com/security/cve/CVE-2026-69244.html
* https://bugzilla.suse.com/show_bug.cgi?id=1273125
* https://bugzilla.suse.com/show_bug.cgi?id=1273552
* https://bugzilla.suse.com/show_bug.cgi?id=1273553
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