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SUSE python311 Moderate Base64 Decode Issue Advisory 2026-2723-1

suse
Calendar Grey July 2, 2026
Dist Suse Esm H88
Security update for python311 addressing CVE-2026-3446, mitigates issues related to base64 decoding in SUSE systems.
An update that solves one vulnerability and has one security fix can now be installed.

Summary

## This update for python311 fixes the following issues: Security issues fixed: * CVE-2026-3446: base64 decoding stops at first padded quad by default and ignores other information that could be processed (bsc#1261970). Other updates and bugfixes: * Rewrite structure of Python interpreter packages. `python3*` symbols should be now provided by real `python3` packages and its subpackages instead of the virtual provides (bsc#1258364). ## 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 15-SP4 zypper in -t patch SUSE-SLE-Module-Public-Cloud-15-SP4-2026-2723=1 * openSUSE Leap 15.4 zypper in -t patch SUSE-2026-2723=1 ## Package List:

Topics%20covered

Topics Covered

security advisory moderate SuSE python311 cve-2026-3446 base64 decoding

References

* bsc#1258364

* bsc#1261970

Cross-

* CVE-2026-3446

CVSS scores:

* CVE-2026-3446 ( SUSE ): 6.0

CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

* CVE-2026-3446 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N

* CVE-2026-3446 ( NVD ): 6.0

CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/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

Affected Products:

* openSUSE Leap 15.4

* Public Cloud Module 15-SP4

* SUSE Linux Enterprise High Performance Computing 15 SP4

* SUSE Linux Enterprise Server 15 SP4

* SUSE Linux Enterprise Server for SAP Applications 15 SP4

* SUSE Manager Proxy 4.3

* SUSE Manager Retail Branch Server 4.3

* SUSE Manager Server 4.3

Severity
moderate
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:2723-1
Release Date: 2026-07-01T18:09:22Z
Rating: moderate

Topics%20covered

Topics Covered

security advisory moderate SuSE python311 cve-2026-3446 base64 decoding

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