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SUSE: Python3 Moderate Update Denial of Service Fix 2026:0027-1

suse
Calendar Grey January 5, 2026
Dist Suse Esm H88
An important update resolves three vulnerabilities in Python3 on SUSE, addressing key security issues effectively.
An update that solves three vulnerabilities can now be installed.

Summary

## This update for python3 fixes the following issues: * CVE-2025-12084: cpython: Fixed quadratic algorithm in xml.dom.minidom leading to denial of service (bsc#1254997) * CVE-2025-13836: Fixed default Content-Lenght read amount from HTTP response (bsc#1254400) * CVE-2025-13837: Fixed plistlib module denial of service (bsc#1254401) ## 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 15.3 zypper in -t patch SUSE-2026-27=1 * openSUSE Leap 15.6 zypper in -t patch openSUSE-SLE-15.6-2026-27=1 * SUSE Linux Enterprise Micro for Rancher 5.3 zypper in -t patch SUSE-SLE-Micro-5.3-2026-27=1 * SUSE Linux Enterprise Micro 5.3

Topics%20covered

Topics Covered

security advisory moderate denial of service update SuSE python3

References

* bsc#1254400

* bsc#1254401

* bsc#1254997

Cross-

* CVE-2025-12084

* CVE-2025-13836

* CVE-2025-13837

CVSS scores:

* CVE-2025-12084 ( 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/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-2025-12084 ( SUSE ): 4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

* CVE-2025-12084 ( NVD ): 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/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-2025-12084 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

* CVE-2025-13836 ( SUSE ): 6.3

Announcement ID: SUSE-SU-2026:0027-1
Release Date: 2026-01-05T12:50:14Z
Rating: moderate

Topics%20covered

Topics Covered

security advisory moderate denial of service update SuSE python3

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