SUSE-SU-2026:3546-1: important: Security update for MozillaThunderbird

SLE-SECURITY-UPDATES null at suse.de
Mon Aug 10 20:32:48 UTC 2026 

# Security update for MozillaThunderbird

Announcement ID: SUSE-SU-2026:3546-1  
Release Date: 2026-08-10T14:02:10Z  
Rating: important  
References:

  * bsc#1271649

  
Cross-References:

  * CVE-2026-14899
  * CVE-2026-15718
  * CVE-2026-15719
  * CVE-2026-16349
  * CVE-2026-16350
  * CVE-2026-16351
  * CVE-2026-16352
  * CVE-2026-16353
  * CVE-2026-16354
  * CVE-2026-16355
  * CVE-2026-16356
  * CVE-2026-16357
  * CVE-2026-16358
  * CVE-2026-16359
  * CVE-2026-16360
  * CVE-2026-16361
  * CVE-2026-16362
  * CVE-2026-16363
  * CVE-2026-16368
  * CVE-2026-16369
  * CVE-2026-16371
  * CVE-2026-16374
  * CVE-2026-16375
  * CVE-2026-16377
  * CVE-2026-16379
  * CVE-2026-16381
  * CVE-2026-16383
  * CVE-2026-16387
  * CVE-2026-16390
  * CVE-2026-16391
  * CVE-2026-16396
  * CVE-2026-16405
  * CVE-2026-16412

  
CVSS scores:

  * CVE-2026-14899 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  * CVE-2026-14899 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  * CVE-2026-15718 ( NVD ):  4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
  * CVE-2026-15719 ( NVD ):  5.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
  * CVE-2026-16349 ( SUSE ):  7.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
  * CVE-2026-16349 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-16350 ( SUSE ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-16350 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-16351 ( SUSE ):  8.3 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
  * CVE-2026-16351 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-16352 ( SUSE ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-16352 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-16353 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-16353 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-16354 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  * CVE-2026-16355 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-16356 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-16357 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-16358 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-16359 ( NVD ):  9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-16360 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-16361 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-16362 ( NVD ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-16363 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-16368 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-16369 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-16371 ( NVD ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-16374 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  * CVE-2026-16375 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-16377 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-16379 ( NVD ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-16381 ( NVD ):  9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-16383 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-16387 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-16390 ( NVD ):  9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-16391 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  * CVE-2026-16396 ( NVD ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-16405 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  * CVE-2026-16412 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/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 33 vulnerabilities can now be installed.

## Description:

This update for MozillaThunderbird fixes the following issues:

Update to Mozilla Thunderbird 140.13. \- MFSA 2026-72 (bsc#1271649) *
CVE-2026-14899: Off-by-one out of bounds read in MIME header parser for
forwarding * CVE-2026-15718: Invalid pointer in the JavaScript: WebAssembly
component * CVE-2026-15719: Site isolation issue in the DOM: Navigation
component * CVE-2026-16349: Same-origin policy bypass in the DOM: Navigation
component * CVE-2026-16350: Incorrect boundary conditions in the Audio/Video:
cubeb component * CVE-2026-16362: Use-after-free in the WebRTC: Audio/Video
component * CVE-2026-16351: Sandbox escape due to use-after-free in the DOM:
Navigation component * CVE-2026-16352: Sandbox escape due to use-after-free in
the Disability Access APIs component * CVE-2026-16363: JIT miscompilation in the
JavaScript: WebAssembly component * CVE-2026-16353: Invalid pointer in the DOM:
Bindings (WebIDL) component * CVE-2026-16354: Information disclosure in the
Graphics: ImageLib component * CVE-2026-16368: Incorrect boundary conditions in
the JavaScript: WebAssembly component * CVE-2026-16369: Integer overflow in the
JavaScript: WebAssembly component * CVE-2026-16355: JIT miscompilation in the
JavaScript Engine: JIT component * CVE-2026-16356: Sandbox escape due to use-
after-free in the Disability Access APIs component * CVE-2026-16357: Incorrect
boundary conditions in the Graphics component * CVE-2026-16371: Privilege
escalation in the DOM: Navigation component * CVE-2026-16374: Information
disclosure in the Framework component in DevTools * CVE-2026-16375: Site
isolation issue in the Networking: HTTP component * CVE-2026-16377: Mitigation
bypass in the PDF Viewer component * CVE-2026-16379: Privilege escalation in the
DOM: Content Processes component * CVE-2026-16358: Site isolation issue in the
Graphics: WebRender component * CVE-2026-16381: Same-origin policy bypass in the
Networking: DNS component * CVE-2026-16383: Mitigation bypass in the DOM:
Networking component * CVE-2026-16387: Site isolation issue in the Networking
component * CVE-2026-16390: Mitigation bypass in the Enterprise Policies
component * CVE-2026-16391: Information disclosure in the Storage: IndexedDB
component * CVE-2026-16359: Incorrect boundary conditions in the Audio/Video:
GMP component * CVE-2026-16396: Privilege escalation in WebExtensions *
CVE-2026-16405: Information disclosure in the Networking: WebSockets component *
CVE-2026-16412: Memory safety bugs fixed in Thunderbird ESR 140.13 and
Thunderbird 153 * CVE-2026-16360: Memory safety bugs fixed in Firefox ESR
115.38, Firefox ESR 140.13 and Firefox 153 * CVE-2026-16361: Memory safety bugs
fixed in Thunderbird ESR 140.13

## 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-SP7-2026-3546=1

  * SUSE Package Hub 15 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Packagehub-Subpackages-15-SP7-2026-3546=1

## Package List:

  * SUSE Linux Enterprise Workstation Extension 15 SP7 (x86_64)
    * MozillaThunderbird-translations-common-140.13.0-150200.8.280.1
    * MozillaThunderbird-debuginfo-140.13.0-150200.8.280.1
    * MozillaThunderbird-140.13.0-150200.8.280.1
    * MozillaThunderbird-debugsource-140.13.0-150200.8.280.1
    * MozillaThunderbird-translations-other-140.13.0-150200.8.280.1
  * SUSE Package Hub 15 15-SP7 (aarch64 ppc64le s390x)
    * MozillaThunderbird-translations-common-140.13.0-150200.8.280.1
    * MozillaThunderbird-debuginfo-140.13.0-150200.8.280.1
    * MozillaThunderbird-140.13.0-150200.8.280.1
    * MozillaThunderbird-debugsource-140.13.0-150200.8.280.1
    * MozillaThunderbird-translations-other-140.13.0-150200.8.280.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-14899.html
  * https://www.suse.com/security/cve/CVE-2026-15718.html
  * https://www.suse.com/security/cve/CVE-2026-15719.html
  * https://www.suse.com/security/cve/CVE-2026-16349.html
  * https://www.suse.com/security/cve/CVE-2026-16350.html
  * https://www.suse.com/security/cve/CVE-2026-16351.html
  * https://www.suse.com/security/cve/CVE-2026-16352.html
  * https://www.suse.com/security/cve/CVE-2026-16353.html
  * https://www.suse.com/security/cve/CVE-2026-16354.html
  * https://www.suse.com/security/cve/CVE-2026-16355.html
  * https://www.suse.com/security/cve/CVE-2026-16356.html
  * https://www.suse.com/security/cve/CVE-2026-16357.html
  * https://www.suse.com/security/cve/CVE-2026-16358.html
  * https://www.suse.com/security/cve/CVE-2026-16359.html
  * https://www.suse.com/security/cve/CVE-2026-16360.html
  * https://www.suse.com/security/cve/CVE-2026-16361.html
  * https://www.suse.com/security/cve/CVE-2026-16362.html
  * https://www.suse.com/security/cve/CVE-2026-16363.html
  * https://www.suse.com/security/cve/CVE-2026-16368.html
  * https://www.suse.com/security/cve/CVE-2026-16369.html
  * https://www.suse.com/security/cve/CVE-2026-16371.html
  * https://www.suse.com/security/cve/CVE-2026-16374.html
  * https://www.suse.com/security/cve/CVE-2026-16375.html
  * https://www.suse.com/security/cve/CVE-2026-16377.html
  * https://www.suse.com/security/cve/CVE-2026-16379.html
  * https://www.suse.com/security/cve/CVE-2026-16381.html
  * https://www.suse.com/security/cve/CVE-2026-16383.html
  * https://www.suse.com/security/cve/CVE-2026-16387.html
  * https://www.suse.com/security/cve/CVE-2026-16390.html
  * https://www.suse.com/security/cve/CVE-2026-16391.html
  * https://www.suse.com/security/cve/CVE-2026-16396.html
  * https://www.suse.com/security/cve/CVE-2026-16405.html
  * https://www.suse.com/security/cve/CVE-2026-16412.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1271649

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