Security update for MozillaThunderbird

Announcement ID: SUSE-SU-2026:0153-1
Release Date: 2026-01-19T11:14:05Z
Rating: critical
References:
Cross-References:
CVSS scores:
  • CVE-2025-14327 ( SUSE ): 5.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
  • CVE-2025-14327 ( SUSE ): 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
  • CVE-2025-14327 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
  • CVE-2025-14327 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
  • CVE-2026-0877 ( NVD ): 8.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
  • CVE-2026-0878 ( NVD ): 8.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
  • CVE-2026-0879 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CVE-2026-0880 ( NVD ): 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • CVE-2026-0882 ( NVD ): 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • CVE-2026-0883 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
  • CVE-2026-0884 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CVE-2026-0885 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
  • CVE-2026-0886 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
  • CVE-2026-0887 ( NVD ): 4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
  • CVE-2026-0890 ( NVD ): 5.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
  • CVE-2026-0891 ( NVD ): 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products:
  • openSUSE Leap 15.6
  • 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 13 vulnerabilities can now be installed.

Description:

This update for MozillaThunderbird fixes the following issues:

MFSA 2026-05 (bsc#1256340):

  • CVE-2026-0877: Mitigation bypass in the DOM in Security component
  • CVE-2026-0878: Sandbox escape due to incorrect boundary conditions in the Graphics in CanvasWebGL component
  • CVE-2026-0879: Sandbox escape due to incorrect boundary conditions in the Graphics component
  • CVE-2026-0880: Sandbox escape due to integer overflow in the Graphics component
  • CVE-2026-0882: Use-after-free in the IPC component
  • CVE-2025-14327: Spoofing issue in the Downloads Panel component
  • CVE-2026-0883: Information disclosure in the Networking component
  • CVE-2026-0884: Use-after-free in the JavaScript Engine component
  • CVE-2026-0885: Use-after-free in the JavaScript: GC component
  • CVE-2026-0886: Incorrect boundary conditions in the Graphics component
  • CVE-2026-0887: Clickjacking issue, information disclosure in the PDF Viewer component
  • CVE-2026-0890: Spoofing issue in the DOM in Copy & Paste and Drag & Drop component
  • CVE-2026-0891: Memory safety bugs fixed in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147

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 openSUSE-SLE-15.6-2026-153=1
  • SUSE Package Hub 15 15-SP7
    zypper in -t patch SUSE-SLE-Module-Packagehub-Subpackages-15-SP7-2026-153=1
  • SUSE Linux Enterprise Workstation Extension 15 SP7
    zypper in -t patch SUSE-SLE-Product-WE-15-SP7-2026-153=1

Package List:

  • openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64)
    • MozillaThunderbird-translations-common-140.7.0-150200.8.251.1
    • MozillaThunderbird-debuginfo-140.7.0-150200.8.251.1
    • MozillaThunderbird-translations-other-140.7.0-150200.8.251.1
    • MozillaThunderbird-140.7.0-150200.8.251.1
    • MozillaThunderbird-debugsource-140.7.0-150200.8.251.1
  • SUSE Package Hub 15 15-SP7 (aarch64 ppc64le s390x)
    • MozillaThunderbird-translations-common-140.7.0-150200.8.251.1
    • MozillaThunderbird-debuginfo-140.7.0-150200.8.251.1
    • MozillaThunderbird-translations-other-140.7.0-150200.8.251.1
    • MozillaThunderbird-140.7.0-150200.8.251.1
    • MozillaThunderbird-debugsource-140.7.0-150200.8.251.1
  • SUSE Linux Enterprise Workstation Extension 15 SP7 (x86_64)
    • MozillaThunderbird-translations-common-140.7.0-150200.8.251.1
    • MozillaThunderbird-debuginfo-140.7.0-150200.8.251.1
    • MozillaThunderbird-translations-other-140.7.0-150200.8.251.1
    • MozillaThunderbird-140.7.0-150200.8.251.1
    • MozillaThunderbird-debugsource-140.7.0-150200.8.251.1

References: