Security update for MozillaThunderbird

Announcement ID:	SUSE-SU-2026:2271-1
Release Date:	2026-06-05T06:37:08Z
Rating:	important
References:	bsc#1265212
Cross-References:	CVE-2026-8090 CVE-2026-8092 CVE-2026-8094 CVE-2026-8388 CVE-2026-8391 CVE-2026-8401 CVE-2026-8946 CVE-2026-8947 CVE-2026-8949 CVE-2026-8950 CVE-2026-8953 CVE-2026-8954 CVE-2026-8955 CVE-2026-8956 CVE-2026-8957 CVE-2026-8958 CVE-2026-8959 CVE-2026-8961 CVE-2026-8962 CVE-2026-8968 CVE-2026-8970 CVE-2026-8974 CVE-2026-8975
CVSS scores:	CVE-2026-8090 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H CVE-2026-8090 ( NVD ): 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L CVE-2026-8092 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H CVE-2026-8092 ( NVD ): 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2026-8094 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H CVE-2026-8094 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2026-8388 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N CVE-2026-8391 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVE-2026-8401 ( SUSE ): 8.3 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H CVE-2026-8401 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2026-8946 ( SUSE ): 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVE-2026-8946 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVE-2026-8947 ( SUSE ): 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVE-2026-8947 ( NVD ): 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L CVE-2026-8949 ( SUSE ): 6.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L CVE-2026-8949 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2026-8950 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N CVE-2026-8950 ( NVD ): 9.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N CVE-2026-8953 ( SUSE ): 7.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L CVE-2026-8953 ( NVD ): 9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H CVE-2026-8954 ( SUSE ): 7.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:L CVE-2026-8954 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVE-2026-8955 ( SUSE ): 6.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L CVE-2026-8955 ( NVD ): 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVE-2026-8956 ( SUSE ): 6.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L CVE-2026-8956 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2026-8957 ( SUSE ): 6.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L CVE-2026-8957 ( NVD ): 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVE-2026-8958 ( SUSE ): 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N CVE-2026-8958 ( NVD ): 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N CVE-2026-8959 ( SUSE ): 7.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L CVE-2026-8959 ( NVD ): 9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H CVE-2026-8961 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N CVE-2026-8961 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N CVE-2026-8962 ( SUSE ): 5.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N CVE-2026-8962 ( NVD ): 8.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N CVE-2026-8968 ( SUSE ): 4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L CVE-2026-8968 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2026-8970 ( SUSE ): 6.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L CVE-2026-8970 ( NVD ): 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVE-2026-8974 ( SUSE ): 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVE-2026-8974 ( NVD ): 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVE-2026-8975 ( SUSE ): 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVE-2026-8975 ( NVD ): 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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 23 vulnerabilities can now be installed.

Description:

This update for MozillaThunderbird fixes the following issues

• Updated to Mozilla Thunderbird 140.11 (bsc#1265212)

MFSA 2026-44:

• CVE-2026-8090: Use-after-free in the DOM: Networking component.
• CVE-2026-8092: Memory safety bugs fixed in Thunderbird ESR 140.10.2 and Thunderbird 150.0.2.
• CVE-2026-8094: Other issue in the WebRTC component.

MFSA 2026-51:

• CVE-2026-8388: Incorrect boundary conditions in the JavaScript Engine: JIT component.
• CVE-2026-8391: Other issue in the JavaScript Engine component.
• CVE-2026-8401: Sandbox escape in the Profile Backup component.
• CVE-2026-8946: Incorrect boundary conditions in the Audio/Video: Web Codecs component.
• CVE-2026-8947: Use-after-free in the DOM: Bindings (WebIDL) component.
• CVE-2026-8949: Integer overflow in the Widget: Win32 component.
• CVE-2026-8950: Same-origin policy bypass in the Networking: HTTP component.
• CVE-2026-8953: Sandbox escape due to use-after-free in the Disability Access APIs component.
• CVE-2026-8954: Incorrect boundary conditions, integer overflow in the Audio/Video component.
• CVE-2026-8955: Privilege escalation in the DOM: Workers component.
• CVE-2026-8956: Integer overflow in the Networking: JAR component.
• CVE-2026-8957: Privilege escalation in the Enterprise Policies component.
• CVE-2026-8958: Information disclosure, sandbox escape in the Security: Process Sandboxing component.
• CVE-2026-8959: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component.
• CVE-2026-8961: Spoofing issue in the Form Autofill component.
• CVE-2026-8962: Mitigation bypass in the DOM: Security component.
• CVE-2026-8968: Denial-of-service due to invalid pointer in the Audio/Video: Web Codecs component.
• CVE-2026-8970: Privilege escalation in the Security component.
• CVE-2026-8974: Memory safety bugs fixed in Thunderbird 140.11 and Thunderbird 151.
• CVE-2026-8975: Memory safety bugs fixed in Thunderbird 140.11 and Thunderbird 151.

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 Package Hub 15 15-SP7
  zypper in -t patch SUSE-SLE-Module-Packagehub-Subpackages-15-SP7-2026-2271=1
• SUSE Linux Enterprise Workstation Extension 15 SP7
  zypper in -t patch SUSE-SLE-Product-WE-15-SP7-2026-2271=1

Package List:

• SUSE Package Hub 15 15-SP7 (aarch64 ppc64le s390x)
  • MozillaThunderbird-debugsource-140.11.0-150200.8.274.1
  • MozillaThunderbird-140.11.0-150200.8.274.1
  • MozillaThunderbird-debuginfo-140.11.0-150200.8.274.1
  • MozillaThunderbird-translations-common-140.11.0-150200.8.274.1
  • MozillaThunderbird-translations-other-140.11.0-150200.8.274.1
• SUSE Linux Enterprise Workstation Extension 15 SP7 (x86_64)
  • MozillaThunderbird-debugsource-140.11.0-150200.8.274.1
  • MozillaThunderbird-140.11.0-150200.8.274.1
  • MozillaThunderbird-debuginfo-140.11.0-150200.8.274.1
  • MozillaThunderbird-translations-common-140.11.0-150200.8.274.1
  • MozillaThunderbird-translations-other-140.11.0-150200.8.274.1

References:

• https://www.suse.com/security/cve/CVE-2026-8090.html
• https://www.suse.com/security/cve/CVE-2026-8092.html
• https://www.suse.com/security/cve/CVE-2026-8094.html
• https://www.suse.com/security/cve/CVE-2026-8388.html
• https://www.suse.com/security/cve/CVE-2026-8391.html
• https://www.suse.com/security/cve/CVE-2026-8401.html
• https://www.suse.com/security/cve/CVE-2026-8946.html
• https://www.suse.com/security/cve/CVE-2026-8947.html
• https://www.suse.com/security/cve/CVE-2026-8949.html
• https://www.suse.com/security/cve/CVE-2026-8950.html
• https://www.suse.com/security/cve/CVE-2026-8953.html
• https://www.suse.com/security/cve/CVE-2026-8954.html
• https://www.suse.com/security/cve/CVE-2026-8955.html
• https://www.suse.com/security/cve/CVE-2026-8956.html
• https://www.suse.com/security/cve/CVE-2026-8957.html
• https://www.suse.com/security/cve/CVE-2026-8958.html
• https://www.suse.com/security/cve/CVE-2026-8959.html
• https://www.suse.com/security/cve/CVE-2026-8961.html
• https://www.suse.com/security/cve/CVE-2026-8962.html
• https://www.suse.com/security/cve/CVE-2026-8968.html
• https://www.suse.com/security/cve/CVE-2026-8970.html
• https://www.suse.com/security/cve/CVE-2026-8974.html
• https://www.suse.com/security/cve/CVE-2026-8975.html
• https://bugzilla.suse.com/show_bug.cgi?id=1265212