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openSUSE 15.4 python311 Moderate Base64 Decoding Issue 2026-2723-1

opensuse
Calendar Grey July 2, 2026
Dist Opensuse Esm H88
# Security update for python311 Announcement ID: SUSE-SU-2026:2723-1 Release Date: 2026-07-01T18:09:
An update that solves one vulnerability and has one security fix can now be installed.

Description

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).

Topics%20covered

Topics Covered

security advisory moderate OpenSUSE base64 python311 cve-2026-3446

Patch

## 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

* openSUSE Leap 15.4 (aarch64 i586 ppc64le s390x x86_64)

* python311-core-debugsource-3.11.15-150400.9.88.1

* python311-testsuite-3.11.15-150400.9.88.1

* python311-curses-debuginfo-3.11.15-150400.9.88.1

* python311-doc-devhelp-3.11.15-150400.9.88.1

* python311-dbm-3.11.15-150400.9.88.1

* python311-testsuite-debuginfo-3.11.15-150400.9.88.1

* python311-idle-3.11.15-150400.9.88.1

* python311-debugsource-3.11.15-150400.9.88.1

* python311-tools-3.11.15-150400.9.88.1

* libpython3_11-1_0-3.11.15-150400.9.88.1

* python311-base-3.11.15-150400.9.88.1

* python311-doc-3.11.15-150400.9.88.1

* python311-curses-3.11.15-150400.9.88.1

* python311-devel-3.11.15-150400.9.88.1

* libpython3_11-1_0-debuginfo-3.11.15-150400.9.88.1

* python311-3.11.15-150400.9.88.1

* python311-tk-debuginfo-3.11.15-150400.9.88.1

* python311-tk-3.11.15-150400.9.88.1

* python311-dbm-debuginfo-3.11.15-150400.9.88.1

* python311-debuginfo-3.11.15-150400.9.88.1

* python311-base-debuginfo-3.11.15-150400.9.88.1

* openSUSE Leap 15.4 (x86_64)

*...

Read the Full Advisory

References

* bsc#1258364

* bsc#1261970

## References:

* https://www.suse.com/security/cve/CVE-2026-3446.html

* https://bugzilla.suse.com/show_bug.cgi?id=1258364

* https://bugzilla.suse.com/show_bug.cgi?id=1261970

Severity
moderate
Lowest
Low
Medium
High
Critical

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

Topics%20covered

Topics Covered

security advisory moderate OpenSUSE base64 python311 cve-2026-3446

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