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openSUSE python311 Moderate Base64 Decoding Problem SUSE-2026-2298-1

opensuse
Calendar Grey June 8, 2026
Dist Opensuse Esm H88
Update for openSUSE addresses a moderate Base64 decoding issue in python311 with a security fix.
An update that solves one vulnerability and has one security fix can now be installed.

Description

This update for python311 fixes the following issues:

* CVE-2026-3446: Base64 decoding stops at first padded quad by default

(bsc#1261970).

Topics%20covered

Topics Covered

security advisory moderate OpenSUSE python311 CWE-20 base64 decoding

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:

* openSUSE Leap 15.6

zypper in -t patch SUSE-2026-2298=1

* Basesystem Module 15-SP7

zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-2298=1

* Python 3 Module 15-SP7

zypper in -t patch SUSE-SLE-Module-Python3-15-SP7-2026-2298=1

Package List

* openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64 i586)

* python311-testsuite-3.11.15-150600.3.56.1

* python311-3.11.15-150600.3.56.1

* python311-tk-3.11.15-150600.3.56.1

* python311-base-3.11.15-150600.3.56.1

* python311-tk-debuginfo-3.11.15-150600.3.56.1

* python311-base-debuginfo-3.11.15-150600.3.56.1

* python311-devel-3.11.15-150600.3.56.1

* python311-debuginfo-3.11.15-150600.3.56.1

* python311-dbm-3.11.15-150600.3.56.1

* python311-idle-3.11.15-150600.3.56.1

* python311-testsuite-debuginfo-3.11.15-150600.3.56.1

* python311-core-debugsource-3.11.15-150600.3.56.1

* python311-doc-devhelp-3.11.15-150600.3.56.1

* libpython3_11-1_0-debuginfo-3.11.15-150600.3.56.1

* python311-curses-debuginfo-3.11.15-150600.3.56.1

* python311-debugsource-3.11.15-150600.3.56.1

* python311-dbm-debuginfo-3.11.15-150600.3.56.1

* python311-curses-3.11.15-150600.3.56.1

* python311-doc-3.11.15-150600.3.56.1

* python311-tools-3.11.15-150600.3.56.1

* libpython3_11-1_0-3.11.15-150600.3.56.1

* openSUSE Leap 15.6 (aarch64_ilp32)

*...

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-2026:2298-1
Release Date: 2026-06-08T10:17:21Z
Affected Products: * Basesystem Module 15-SP7 * openSUSE Leap 15.6 * Python 3 Module 15-SP7 * SUSE Linux Enterprise Desktop 15 SP7 * SUSE Linux Enterprise Real Time 15 SP7 * SUSE Linux Enterprise Server 15 SP7 * SUSE Linux Enterprise Server for SAP Applications 15 SP7

Topics%20covered

Topics Covered

security advisory moderate OpenSUSE python311 CWE-20 base64 decoding

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