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openSUSE Python311 Important Memory Error Command Injection Fix 2026-3104-1

opensuse
Calendar Grey July 17, 2026
Scroller Opensuse
Four security issues in python311 are resolved in openSUSE update SUSE-SU-2026:3104-1. Install the patch immediately.
An update that solves four vulnerabilities can now be installed.

Description

This update for python311 fixes the following issues

* CVE-2026-1502: CR/LF bytes not rejected by HTTP client proxy tunnel headers

or host (bsc#1261969).

* CVE-2026-4786: URLs containing `%action` can bypass mitigation that allows

command injection via the `webbrowser.open()` API (bsc#1262319).

* CVE-2026-6019: HTML parser-sensitive sequence not neutralized by

`http.cookies.Morsel.js_output()` (bsc#1262654).

* CVE-2026-6100: use-after-free in decompression modules when a memory

allocation fails with a `MemoryError` and the decompression instance is re-

used (bsc#1262098).

Topics%20covered

Topics Covered

security advisory important command injection memory error OpenSUSE python311

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:

* Python 3 Module 15-SP7

zypper in -t patch SUSE-SLE-Module-Python3-15-SP7-2026-3104=1

* SUSE Linux Enterprise Server 15 SP6 LTSS

zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-3104=1

* Basesystem Module 15-SP7

zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-3104=1

* SUSE Linux Enterprise Server for SAP Applications 15 SP6

zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-3104=1

* openSUSE Leap 15.6

zypper in -t patch SUSE-2026-3104=1

Package List

* openSUSE Leap 15.6 (aarch64_ilp32)

* libpython3_11-1_0-64bit-3.11.15-150600.3.59.3

* python311-base-64bit-debuginfo-3.11.15-150600.3.59.3

* python311-64bit-3.11.15-150600.3.59.3

* python311-base-64bit-3.11.15-150600.3.59.3

* libpython3_11-1_0-64bit-debuginfo-3.11.15-150600.3.59.3

* python311-64bit-debuginfo-3.11.15-150600.3.59.3

* openSUSE Leap 15.6 (aarch64 i586 ppc64le s390x x86_64)

* python311-doc-devhelp-3.11.15-150600.3.59.1

* python311-3.11.15-150600.3.59.3

* python311-curses-3.11.15-150600.3.59.3

* python311-core-debugsource-3.11.15-150600.3.59.3

* python311-tk-debuginfo-3.11.15-150600.3.59.3

* libpython3_11-1_0-debuginfo-3.11.15-150600.3.59.3

* python311-testsuite-3.11.15-150600.3.59.3

* python311-dbm-debuginfo-3.11.15-150600.3.59.3

* python311-dbm-3.11.15-150600.3.59.3

* python311-testsuite-debuginfo-3.11.15-150600.3.59.3

* python311-base-3.11.15-150600.3.59.3

* python311-curses-debuginfo-3.11.15-150600.3.59.3

* libpython3_11-1_0-3.11.15-150600.3.59.3

*...

Read the Full Advisory

References

* bsc#1261969

* bsc#1262098

* bsc#1262319

* bsc#1262654

## References:

* https://www.suse.com/security/cve/CVE-2026-1502.html

* https://www.suse.com/security/cve/CVE-2026-4786.html

* https://www.suse.com/security/cve/CVE-2026-6019.html

* https://www.suse.com/security/cve/CVE-2026-6100.html

* https://bugzilla.suse.com/show_bug.cgi?id=1261969

* https://bugzilla.suse.com/show_bug.cgi?id=1262098

* https://bugzilla.suse.com/show_bug.cgi?id=1262319

* https://bugzilla.suse.com/show_bug.cgi?id=1262654

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:3104-1
Release Date: 2026-07-17T13:31:49Z
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 SP6 * SUSE Linux Enterprise Server 15 SP6 LTSS * SUSE Linux Enterprise Server 15 SP7 * SUSE Linux Enterprise Server for SAP Applications 15 SP6 * SUSE Linux Enterprise Server for SAP Applications 15 SP7

Topics%20covered

Topics Covered

security advisory important command injection memory error OpenSUSE python311

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