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openSUSE Leap 16.0 Python-urllib3 Moderate Resource Issues 2026-20271

Linuxsecurity •LinuxSecurity Advisories • February 27, 2026

This update for python-urllib3_1 fixes the following issues: - CVE-2025-66471: excessive resource consumption via decompression of highly compressed data in Streaming API (bsc#1254867). - CVE-2025-66418: resource exhaustion via unbounded number of links in the decompression chain (bsc#1254866). - CVE-2026-21441: excessive resource consumption during decompression of data in HTTP redirect responses (bsc#1256331). Patch instructions: To install this openSUSE security 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 16.0 zypper in -t patch openSUSE-Leap-16.0-313=1

- openSUSE Leap 16.0: python313-urllib3_1-1.26.20-160000.3.1

- openSUSE Leap 16.0:

python313-urllib3_1-1.26.20-160000.3.1

* bsc#1254866 * bsc#1254867 * bsc#1256331 References: * * *

The full story

This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

openSUSE Leap Vulnerabilities Lead to Resource Exhaustion Risks Recent updates for openSUSE Leap address multiple vulnerabilities affecting the containerized-data-importer and python-urllib3 packages. Key issues include denial of service and excessive resource consumption due to improper handling of compressed data and unbounded decompression chains. Users of openSUSE Leap 16.0 and 17.0 are advised to apply the security patches promptly. 2 sources 58

Extracted Entities

CVEs (3)

CVE-2025-66418 CVE-2025-66471 CVE-2026-21441