Security update for MozillaThunderbird

Announcement ID: SUSE-SU-2026:1379-1
Release Date: 2026-04-16T08:42:00Z
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2026-5731 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
  • CVE-2026-5731 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CVE-2026-5732 ( SUSE ): 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • CVE-2026-5732 ( NVD ): 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • CVE-2026-5734 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
  • CVE-2026-5734 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CVE-2026-5734 ( NVD ): 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products:
  • 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
  • SUSE Linux Enterprise Workstation Extension 15 SP7
  • SUSE Package Hub 15 15-SP7

An update that solves three vulnerabilities can now be installed.

Description:

This update for MozillaThunderbird fixes the following issues:

  • Update to 149.0.2 and 140.9.1esr (bsc#1261663).
  • CVE-2026-5731: Memory safety bugs fixed in Firefox ESR 115.34.1, Firefox ESR 140.9.1, Thunderbird ESR 140.9.1, Firefox 149.0.2 and Thunderbird 149.0.2.
  • CVE-2026-5732: Incorrect boundary conditions, integer overflow in the Graphics: Text component.
  • CVE-2026-5734: Memory safety bugs fixed in Firefox ESR 140.9.1, Thunderbird ESR 140.9.1, Firefox 149.0.2 and Thunderbird 149.0.2.

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 Workstation Extension 15 SP7
    zypper in -t patch SUSE-SLE-Product-WE-15-SP7-2026-1379=1
  • SUSE Package Hub 15 15-SP7
    zypper in -t patch SUSE-SLE-Module-Packagehub-Subpackages-15-SP7-2026-1379=1

Package List:

  • SUSE Linux Enterprise Workstation Extension 15 SP7 (x86_64)
    • MozillaThunderbird-translations-common-140.9.1-150200.8.266.1
    • MozillaThunderbird-translations-other-140.9.1-150200.8.266.1
    • MozillaThunderbird-debuginfo-140.9.1-150200.8.266.1
    • MozillaThunderbird-140.9.1-150200.8.266.1
    • MozillaThunderbird-debugsource-140.9.1-150200.8.266.1
  • SUSE Package Hub 15 15-SP7 (aarch64 ppc64le s390x)
    • MozillaThunderbird-translations-common-140.9.1-150200.8.266.1
    • MozillaThunderbird-translations-other-140.9.1-150200.8.266.1
    • MozillaThunderbird-debuginfo-140.9.1-150200.8.266.1
    • MozillaThunderbird-140.9.1-150200.8.266.1
    • MozillaThunderbird-debugsource-140.9.1-150200.8.266.1

References: