Security update for MozillaThunderbird

Announcement ID: SUSE-SU-2026:0388-1
Release Date: 2026-02-05T11:14:26Z
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2026-0818 ( SUSE ): 2.3 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
  • CVE-2026-0818 ( SUSE ): 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
  • CVE-2026-0818 ( NVD ): 4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
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 one vulnerability can now be installed.

Description:

This update for MozillaThunderbird fixes the following issues:

Update to Mozilla Thunderbird 140.7.1 MFSA 2026-08 (bsc#1257397):

  • CVE-2026-0818: CSS-based exfiltration of the content from partially encrypted emails when allowing remote content

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-15.6-2026-388=1
  • SUSE Package Hub 15 15-SP7
    zypper in -t patch SUSE-SLE-Module-Packagehub-Subpackages-15-SP7-2026-388=1
  • SUSE Linux Enterprise Workstation Extension 15 SP7
    zypper in -t patch SUSE-SLE-Product-WE-15-SP7-2026-388=1

Package List:

  • openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64)
    • MozillaThunderbird-debugsource-140.7.1-150200.8.254.1
    • MozillaThunderbird-140.7.1-150200.8.254.1
    • MozillaThunderbird-debuginfo-140.7.1-150200.8.254.1
    • MozillaThunderbird-translations-other-140.7.1-150200.8.254.1
    • MozillaThunderbird-translations-common-140.7.1-150200.8.254.1
  • SUSE Package Hub 15 15-SP7 (aarch64 ppc64le s390x)
    • MozillaThunderbird-debugsource-140.7.1-150200.8.254.1
    • MozillaThunderbird-140.7.1-150200.8.254.1
    • MozillaThunderbird-debuginfo-140.7.1-150200.8.254.1
    • MozillaThunderbird-translations-other-140.7.1-150200.8.254.1
    • MozillaThunderbird-translations-common-140.7.1-150200.8.254.1
  • SUSE Linux Enterprise Workstation Extension 15 SP7 (x86_64)
    • MozillaThunderbird-debugsource-140.7.1-150200.8.254.1
    • MozillaThunderbird-140.7.1-150200.8.254.1
    • MozillaThunderbird-debuginfo-140.7.1-150200.8.254.1
    • MozillaThunderbird-translations-other-140.7.1-150200.8.254.1
    • MozillaThunderbird-translations-common-140.7.1-150200.8.254.1

References: