SUSE 2026 python-urllib3 Moderate Resource Exhaustion Issues 2026-1412-1
suse
April 16, 2026
An update that solves three vulnerabilities, contains one feature and has one security fix can now be installed.
Summary
## This update for python-urllib3 fixes the following issues: Security issues: * CVE-2025-66418: resource exhaustion via unbounded number of links in the decompression chain (bsc#1254866). * CVE-2025-66471: excessive resource consumption via decompression of highly compressed data in Streaming API (bsc#1254867). * CVE-2026-21441: excessive resource consumption during decompression of data in HTTP redirect responses (bsc#1256331). Non-security issues: * Disabled response decompression with brotli due to missing brotli feature (jsc#PED-15380). ## 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: * Public Cloud Module 12
Topics Covered
References
* bsc#1254866
* bsc#1254867
* bsc#1256331
* bsc#1259829
* jsc#PED-15380
Cross-
* CVE-2025-66418
* CVE-2025-66471
* CVE-2026-21441
CVSS scores:
* CVE-2025-66418 ( 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-2025-66418 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
* CVE-2025-66418 ( NVD ): 8.9
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/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-2025-66418 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2025-66471 ( SUSE ): 6.3
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
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Severity
important
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Announcement ID: SUSE-SU-2026:1412-1
Release Date: 2026-04-16T13:06:27Z
Rating: moderate
Topics Covered
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