Security update for python3 SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2026:0897-1 Final 1 1 2026-03-13T15:26:14Z current 2026-03-13T15:26:14Z 2026-03-13T15:26:14Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for python3 This update for python3 fixes the following issues: - CVE-2026-1299: header injection when an email is serialized due to improper newline quoting in BytesGenerator (bsc#1257181). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2026-897,SUSE-SLE-SERVER-12-SP5-LTSS-2026-897,SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-897 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2026/suse-su-20260897-1/ Link for SUSE-SU-2026:0897-1 https://lists.suse.com/pipermail/sle-security-updates/2026-March/024695.html E-Mail link for SUSE-SU-2026:0897-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1257181 SUSE Bug 1257181 https://www.suse.com/security/cve/CVE-2026-1299/ SUSE CVE CVE-2026-1299 page SUSE Linux Enterprise Server 12 SP5-LTSS SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 libpython3_4m1_0-3.4.10-25.175.1 libpython3_4m1_0-32bit-3.4.10-25.175.1 libpython3_4m1_0-64bit-3.4.10-25.175.1 python3-3.4.10-25.175.1 python3-32bit-3.4.10-25.175.1 python3-64bit-3.4.10-25.175.1 python3-base-3.4.10-25.175.1 python3-base-32bit-3.4.10-25.175.1 python3-base-64bit-3.4.10-25.175.1 python3-curses-3.4.10-25.175.1 python3-dbm-3.4.10-25.175.1 python3-devel-3.4.10-25.175.1 python3-doc-3.4.10-25.175.1 python3-doc-pdf-3.4.10-25.175.1 python3-idle-3.4.10-25.175.1 python3-testsuite-3.4.10-25.175.1 python3-tk-3.4.10-25.175.1 python3-tools-3.4.10-25.175.1 libpython3_4m1_0-3.4.10-25.175.1 as a component of SUSE Linux Enterprise Server 12 SP5-LTSS libpython3_4m1_0-32bit-3.4.10-25.175.1 as a component of SUSE Linux Enterprise Server 12 SP5-LTSS python3-3.4.10-25.175.1 as a component of SUSE Linux Enterprise Server 12 SP5-LTSS python3-base-3.4.10-25.175.1 as a component of SUSE Linux Enterprise Server 12 SP5-LTSS python3-curses-3.4.10-25.175.1 as a component of SUSE Linux Enterprise Server 12 SP5-LTSS python3-devel-3.4.10-25.175.1 as a component of SUSE Linux Enterprise Server 12 SP5-LTSS python3-tk-3.4.10-25.175.1 as a component of SUSE Linux Enterprise Server 12 SP5-LTSS libpython3_4m1_0-3.4.10-25.175.1 as a component of SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 libpython3_4m1_0-32bit-3.4.10-25.175.1 as a component of SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 python3-3.4.10-25.175.1 as a component of SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 python3-base-3.4.10-25.175.1 as a component of SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 python3-curses-3.4.10-25.175.1 as a component of SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 python3-devel-3.4.10-25.175.1 as a component of SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 python3-tk-3.4.10-25.175.1 as a component of SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 The email module, specifically the "BytesGenerator" class, didn't properly quote newlines for email headers when serializing an email message allowing for header injection when an email is serialized. This is only applicable if using "LiteralHeader" writing headers that don't respect email folding rules, the new behavior will reject the incorrectly folded headers in "BytesGenerator". CVE-2026-1299 SUSE Linux Enterprise Server 12 SP5-LTSS:libpython3_4m1_0-3.4.10-25.175.1 SUSE Linux Enterprise Server 12 SP5-LTSS:libpython3_4m1_0-32bit-3.4.10-25.175.1 SUSE Linux Enterprise Server 12 SP5-LTSS:python3-3.4.10-25.175.1 SUSE Linux Enterprise Server 12 SP5-LTSS:python3-base-3.4.10-25.175.1 SUSE Linux Enterprise Server 12 SP5-LTSS:python3-curses-3.4.10-25.175.1 SUSE Linux Enterprise Server 12 SP5-LTSS:python3-devel-3.4.10-25.175.1 SUSE Linux Enterprise Server 12 SP5-LTSS:python3-tk-3.4.10-25.175.1 SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:libpython3_4m1_0-3.4.10-25.175.1 SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:libpython3_4m1_0-32bit-3.4.10-25.175.1 SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:python3-3.4.10-25.175.1 SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:python3-base-3.4.10-25.175.1 SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:python3-curses-3.4.10-25.175.1 SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:python3-devel-3.4.10-25.175.1 SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:python3-tk-3.4.10-25.175.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2026/suse-su-20260897-1/ https://www.suse.com/security/cve/CVE-2026-1299.html CVE-2026-1299 https://bugzilla.suse.com/1257181 SUSE Bug 1257181