SUSE-SU-2026:0388-1: important: Security update for MozillaThunderbird

[SLE-SECURITY-UPDATES]

# Security update for MozillaThunderbird

Announcement ID: SUSE-SU-2026:0388-1  
Release Date: 2026-02-05T11:14:26Z  
Rating: important  
References:

  * bsc#1257397

  
Cross-References:

  * CVE-2026-0818

  
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:

  * https://www.suse.com/security/cve/CVE-2026-0818.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1257397

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.suse.com/pipermail/sle-security-updates/attachments/20260205/22caaaa1/attachment.htm>