Security update for python39

Announcement ID:	SUSE-SU-2026:1818-1
Release Date:	2026-05-12T07:58:54Z
Rating:	important
References:	bsc#1258364 bsc#1259989 bsc#1261969 bsc#1261970 bsc#1262098 bsc#1262319 bsc#1262654
Cross-References:	CVE-2026-1502 CVE-2026-3446 CVE-2026-3479 CVE-2026-4786 CVE-2026-6019 CVE-2026-6100
CVSS scores:	CVE-2026-1502 ( SUSE ): 5.7 CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N CVE-2026-1502 ( SUSE ): 4.9 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N CVE-2026-1502 ( NVD ): 5.7 CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/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 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 CVE-2026-3479 ( SUSE ): 2.0 CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N CVE-2026-3479 ( SUSE ): 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N CVE-2026-3479 ( NVD ): 0.0 CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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 CVE-2026-4786 ( SUSE ): 7.0 CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/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 CVE-2026-4786 ( SUSE ): 7.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L CVE-2026-4786 ( NVD ): 7.0 CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/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 CVE-2026-6019 ( SUSE ): 2.1 CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:L/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 CVE-2026-6019 ( SUSE ): 3.8 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N CVE-2026-6019 ( NVD ): 2.1 CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:L/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 CVE-2026-6100 ( SUSE ): 9.1 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CVE-2026-6100 ( SUSE ): 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2026-6100 ( NVD ): 9.1 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/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 15.3 SUSE Linux Enterprise Server 15 SP5 SUSE Linux Enterprise Server 15 SP5 LTSS SUSE Linux Enterprise Server for SAP Applications 15 SP5

An update that solves six vulnerabilities and has one security fix can now be installed.

Description:

This update for python39 fixes the following issues:

Security issues fixed:

• CVE-2026-1502: HTTP client proxy tunnel headers not validated for CR/LF (bsc#1261969).
• CVE-2026-3446: base64 decoding stops at first padded quad by default and ignores other information that could be processed (bsc#1261970).
• CVE-2026-3479: improper resource argument validation in pkgutil.get_data() can lead to path traversal (bsc#1259989).
• CVE-2026-4786: URLs prefixed with %action can pass the dash-prefix safety check and allow for command injection (bsc#1262319).
• CVE-2026-6019: BaseCookie.js_output() does not neutralize characters in cookie values embedded in JS (bsc#1262654).
• CVE-2026-6100: use-after-free in lzma.LZMADecompressor, bz2.BZ2Decompressor, and gzip.GzipFile when process is under memory pressure(bsc#1262098).

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:

• SUSE Linux Enterprise Server for SAP Applications 15 SP5
  zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-1818=1
• openSUSE Leap 15.3
  zypper in -t patch SUSE-2026-1818=1
• SUSE Linux Enterprise Server 15 SP5 LTSS
  zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-1818=1

Package List:

• SUSE Linux Enterprise Server for SAP Applications 15 SP5 (ppc64le x86_64)
  • python39-dbm-3.9.25-150300.4.106.1
  • python39-base-3.9.25-150300.4.106.1
  • python39-3.9.25-150300.4.106.1
  • libpython3_9-1_0-3.9.25-150300.4.106.1
  • python39-curses-3.9.25-150300.4.106.1
• openSUSE Leap 15.3 (aarch64 ppc64le s390x x86_64 i586)
  • python39-dbm-3.9.25-150300.4.106.1
  • python39-testsuite-3.9.25-150300.4.106.1
  • python39-base-3.9.25-150300.4.106.1
  • python39-tools-3.9.25-150300.4.106.1
  • python39-curses-debuginfo-3.9.25-150300.4.106.1
  • python39-core-debugsource-3.9.25-150300.4.106.1
  • python39-debuginfo-3.9.25-150300.4.106.1
  • python39-testsuite-debuginfo-3.9.25-150300.4.106.1
  • python39-tk-debuginfo-3.9.25-150300.4.106.1
  • python39-doc-3.9.25-150300.4.106.1
  • python39-debugsource-3.9.25-150300.4.106.1
  • python39-doc-devhelp-3.9.25-150300.4.106.1
  • python39-idle-3.9.25-150300.4.106.1
  • python39-dbm-debuginfo-3.9.25-150300.4.106.1
  • python39-base-debuginfo-3.9.25-150300.4.106.1
  • python39-3.9.25-150300.4.106.1
  • python39-devel-3.9.25-150300.4.106.1
  • libpython3_9-1_0-debuginfo-3.9.25-150300.4.106.1
  • python39-curses-3.9.25-150300.4.106.1
  • libpython3_9-1_0-3.9.25-150300.4.106.1
  • python39-tk-3.9.25-150300.4.106.1
• openSUSE Leap 15.3 (x86_64)
  • libpython3_9-1_0-32bit-3.9.25-150300.4.106.1
  • python39-32bit-debuginfo-3.9.25-150300.4.106.1
  • python39-32bit-3.9.25-150300.4.106.1
  • python39-base-32bit-3.9.25-150300.4.106.1
  • libpython3_9-1_0-32bit-debuginfo-3.9.25-150300.4.106.1
  • python39-base-32bit-debuginfo-3.9.25-150300.4.106.1
• openSUSE Leap 15.3 (aarch64_ilp32)
  • python39-64bit-3.9.25-150300.4.106.1
  • libpython3_9-1_0-64bit-debuginfo-3.9.25-150300.4.106.1
  • libpython3_9-1_0-64bit-3.9.25-150300.4.106.1
  • python39-base-64bit-debuginfo-3.9.25-150300.4.106.1
  • python39-base-64bit-3.9.25-150300.4.106.1
  • python39-64bit-debuginfo-3.9.25-150300.4.106.1
• SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64)
  • python39-dbm-3.9.25-150300.4.106.1
  • python39-base-3.9.25-150300.4.106.1
  • python39-3.9.25-150300.4.106.1
  • python39-curses-3.9.25-150300.4.106.1
  • libpython3_9-1_0-3.9.25-150300.4.106.1

References:

• https://www.suse.com/security/cve/CVE-2026-1502.html
• https://www.suse.com/security/cve/CVE-2026-3446.html
• https://www.suse.com/security/cve/CVE-2026-3479.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=1258364
• https://bugzilla.suse.com/show_bug.cgi?id=1259989
• https://bugzilla.suse.com/show_bug.cgi?id=1261969
• https://bugzilla.suse.com/show_bug.cgi?id=1261970
• 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