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SUSE Python Aiohttp Important Denial of Service Sec Update 2026-22173-1

suse
Calendar Grey June 23, 2026
Dist Suse Esm H88
This update addresses 11 security issues in python-aiohttp on SUSE, including denial of service risks and more.
An update that solves 11 vulnerabilities can now be installed.

Summary

## This update for python-aiohttp fixes the following issues * CVE-2026-22815: insufficient header/trailer handling can cause a denial of service (bsc#1261320). * CVE-2026-34513: unbounded DNS cache can cause a denial of service (bsc#1261321). * CVE-2026-34514: content_type parameter manipulation can lead to header Injection (bsc#1261322). * CVE-2026-34516: excessive multipart headers can cause a denial of service (bsc#1261329). * CVE-2026-34517: large multipart form fields can cause a denial of service (bsc#1261331). * CVE-2026-34518: retained Cookie and Proxy-Authorization headers during redirects can lead to information disclosure (bsc#1261332). * CVE-2026-34519: reason parameter can be use to perform header injection (bsc#1261334).

Topics%20covered

Topics Covered

security advisory denial of service SuSE important information disclosure python-aiohttp

References

* bsc#1261320

* bsc#1261321

* bsc#1261322

* bsc#1261329

* bsc#1261331

* bsc#1261332

* bsc#1261334

* bsc#1261335

* bsc#1261343

* bsc#1267471

* bsc#1267561

Cross-

* CVE-2026-22815

* CVE-2026-34513

* CVE-2026-34514

* CVE-2026-34516

* CVE-2026-34517

* CVE-2026-34518

* CVE-2026-34519

* CVE-2026-34520

* CVE-2026-34525

* CVE-2026-34993

* CVE-2026-47265

CVSS scores:

* CVE-2026-22815 ( 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-2026-22815 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

* CVE-2026-22815 ( 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

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:22173-1
Release Date: 2026-06-19T08:00:07Z
Rating: important

Topics%20covered

Topics Covered

security advisory denial of service SuSE important information disclosure python-aiohttp

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