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SUSE SLED15 / SLES15 / openSUSE 15 Security Update : python-urllib3_1 (SUSE-SU-2026:0635-1)

high Nessus Plugin ID 300184

Synopsis

The remote SUSE host is missing one or more security updates.

Description

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:0635-1 advisory.

 - 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).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected python311-urllib3_1 package.

See Also

https://bugzilla.suse.com/1254866

https://bugzilla.suse.com/1254867

https://bugzilla.suse.com/1256331

http://www.nessus.org/u?0ca6f392

https://www.suse.com/security/cve/CVE-2025-66418

https://www.suse.com/security/cve/CVE-2025-66471

https://www.suse.com/security/cve/CVE-2026-21441

Plugin Details

Severity: High

ID: 300184

File Name: suse_SU-2026-0635-1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 3/2/2026

Updated: 3/2/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-21441

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 8.9

Threat Score: 6.3

Threat Vector: CVSS:4.0/E:U

Vector: 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

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:python311-urllib3_1, cpe:/o:novell:suse_linux:15

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 2/25/2026

Vulnerability Publication Date: 12/5/2025

Reference Information

CVE: CVE-2025-66418, CVE-2025-66471, CVE-2026-21441

SuSE: SUSE-SU-2026:0635-1