Upstream information

CVE-2026-2778 at MITRE

Description

Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

SUSE information

Overall state of this security issue: Does not affect SUSE products

SUSE Bugzilla entry: 1258568 [NEW]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
Container suse/sl-micro/6.0/baremetal-os-container:2.1.3-6.61
Container suse/sl-micro/6.0/base-os-container:2.1.3-7.27
Container suse/sl-micro/6.0/kvm-os-container:2.1.3-6.52
Container suse/sl-micro/6.0/rt-os-container:2.1.3-7.63
Container suse/sl-micro/6.0/toolbox:13.2-9.16
Image SL-Micro
  • rpm >= 4.18.0-7.1
Image SL-Micro-BYOS-GCE
Image SUSE-Multi-Linux-Manager-Proxy-BYOS-GCE
Image SUSE-Multi-Linux-Manager-Server-BYOS-GCE
  • google-guest-configs >= 20260116.00-slfo.1.1_1.1
Image SLE-Micro-BYOS
Image SLE-Micro-BYOS-GCE
Image SLE-Micro-GCE
  • google-guest-configs >= 20260116.00-slfo.1.1_1.1
  • librpmbuild9 >= 4.18.0-7.1
  • rpm >= 4.18.0-7.1
Image SLE-Micro
Image SLE-Micro-Azure
Image SLE-Micro-BYOS-Azure
Image SLE-Micro-BYOS-EC2
Image SLE-Micro-EC2
  • librpmbuild9 >= 4.18.0-7.1
  • rpm >= 4.18.0-7.1
Image SLES12-SP5-SAP-Azure-LI-BYOS-Production
Image SLES12-SP5-SAP-Azure-VLI-BYOS-Production
  • MozillaFirefox >= 140.8.0-112.301.1
Image SLES15-SP4-SAP-Azure-LI-BYOS
Image SLES15-SP4-SAP-Azure-LI-BYOS-Production
Image SLES15-SP4-SAP-Azure-VLI-BYOS
Image SLES15-SP4-SAP-Azure-VLI-BYOS-Production
Image SLES15-SP5-SAP-Azure-LI-BYOS
Image SLES15-SP5-SAP-Azure-LI-BYOS-Production
Image SLES15-SP5-SAP-Azure-VLI-BYOS
Image SLES15-SP5-SAP-Azure-VLI-BYOS-Production
Image SLES15-SP6-SAP-Azure-LI-BYOS
Image SLES15-SP6-SAP-Azure-LI-BYOS-Production
Image SLES15-SP6-SAP-Azure-VLI-BYOS
Image SLES15-SP6-SAP-Azure-VLI-BYOS-Production
Image SLES15-SP7-SAP-Azure-LI-BYOS-Production
Image SLES15-SP7-SAP-Azure-VLI-BYOS-Production
  • MozillaFirefox >= 140.8.0-150200.152.222.1
SUSE Liberty Linux 10
  • firefox >= 140.8.0-2.el10_1
  • thunderbird >= 140.8.0-2.el10_1
 Patchnames:
RHSA-2026:3361
RHSA-2026:3517
SUSE Liberty Linux 8
  • firefox >= 140.8.0-2.el8_10
  • thunderbird >= 140.8.0-1.el8_10
 Patchnames:
RHSA-2026:3338
RHSA-2026:3515
SUSE Liberty Linux 9
  • firefox >= 140.8.0-2.el9_7
  • firefox-x11 >= 140.8.0-2.el9_7
  • thunderbird >= 140.8.0-1.el9_7
 Patchnames:
RHSA-2026:3339
RHSA-2026:3516
SUSE Linux Enterprise Desktop 15 SP7
SUSE Linux Enterprise Server 15 SP7
SUSE Linux Enterprise Server for SAP Applications 15 SP7
  • MozillaFirefox >= 140.8.0-150200.152.222.1
  • MozillaFirefox-devel >= 140.8.0-150200.152.222.1
  • MozillaFirefox-translations-common >= 140.8.0-150200.152.222.1
  • MozillaFirefox-translations-other >= 140.8.0-150200.152.222.1
  • MozillaThunderbird >= 140.8.0-150200.8.260.1
  • MozillaThunderbird-translations-common >= 140.8.0-150200.8.260.1
  • MozillaThunderbird-translations-other >= 140.8.0-150200.8.260.1
 Patchnames:
SUSE-SLE-Module-Desktop-Applications-15-SP7-2026-871
SUSE-SLE-Product-WE-15-SP7-2026-880
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS
  • MozillaFirefox >= 140.8.0-150200.152.222.1
  • MozillaFirefox-devel >= 140.8.0-150200.152.222.1
  • MozillaFirefox-translations-common >= 140.8.0-150200.152.222.1
  • MozillaFirefox-translations-other >= 140.8.0-150200.152.222.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-871
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS
  • MozillaFirefox >= 140.8.0-150200.152.222.1
  • MozillaFirefox-devel >= 140.8.0-150200.152.222.1
  • MozillaFirefox-translations-common >= 140.8.0-150200.152.222.1
  • MozillaFirefox-translations-other >= 140.8.0-150200.152.222.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-871
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS
  • MozillaFirefox >= 140.8.0-150200.152.222.1
  • MozillaFirefox-devel >= 140.8.0-150200.152.222.1
  • MozillaFirefox-translations-common >= 140.8.0-150200.152.222.1
  • MozillaFirefox-translations-other >= 140.8.0-150200.152.222.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-871
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS
  • MozillaFirefox >= 140.8.0-150200.152.222.1
  • MozillaFirefox-devel >= 140.8.0-150200.152.222.1
  • MozillaFirefox-translations-common >= 140.8.0-150200.152.222.1
  • MozillaFirefox-translations-other >= 140.8.0-150200.152.222.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-871
SUSE Linux Enterprise High Performance Computing 15 SP7
SUSE Linux Enterprise Module for Desktop Applications 15 SP7
  • MozillaFirefox >= 140.8.0-150200.152.222.1
  • MozillaFirefox-devel >= 140.8.0-150200.152.222.1
  • MozillaFirefox-translations-common >= 140.8.0-150200.152.222.1
  • MozillaFirefox-translations-other >= 140.8.0-150200.152.222.1
 Patchnames:
SUSE-SLE-Module-Desktop-Applications-15-SP7-2026-871
SUSE Linux Enterprise Module for Package Hub 15 SP7
  • MozillaThunderbird >= 140.8.0-150200.8.260.1
  • MozillaThunderbird-translations-common >= 140.8.0-150200.8.260.1
  • MozillaThunderbird-translations-other >= 140.8.0-150200.8.260.1
 Patchnames:
SUSE-SLE-Module-Packagehub-Subpackages-15-SP7-2026-880
SUSE Linux Enterprise Server 12 SP5-LTSS
  • MozillaFirefox >= 140.8.0-112.301.1
  • MozillaFirefox-devel >= 140.8.0-112.301.1
  • MozillaFirefox-translations-common >= 140.8.0-112.301.1
 Patchnames:
SUSE-SLE-SERVER-12-SP5-LTSS-2026-812
SUSE Linux Enterprise Server 15 SP4-LTSS
  • MozillaFirefox >= 140.8.0-150200.152.222.1
  • MozillaFirefox-devel >= 140.8.0-150200.152.222.1
  • MozillaFirefox-translations-common >= 140.8.0-150200.152.222.1
  • MozillaFirefox-translations-other >= 140.8.0-150200.152.222.1
 Patchnames:
SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-871
SUSE Linux Enterprise Server 15 SP5-LTSS
  • MozillaFirefox >= 140.8.0-150200.152.222.1
  • MozillaFirefox-devel >= 140.8.0-150200.152.222.1
  • MozillaFirefox-translations-common >= 140.8.0-150200.152.222.1
  • MozillaFirefox-translations-other >= 140.8.0-150200.152.222.1
 Patchnames:
SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-871
SUSE Linux Enterprise Server 15 SP6-LTSS
  • MozillaFirefox >= 140.8.0-150200.152.222.1
  • MozillaFirefox-devel >= 140.8.0-150200.152.222.1
  • MozillaFirefox-translations-common >= 140.8.0-150200.152.222.1
  • MozillaFirefox-translations-other >= 140.8.0-150200.152.222.1
 Patchnames:
SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-871
SUSE Linux Enterprise Server 16.0
SUSE Linux Enterprise Server for SAP applications 16.0
  • MozillaFirefox >= 140.8.0-160000.1.1
  • MozillaFirefox-devel >= 140.8.0-160000.1.1
  • MozillaFirefox-translations-common >= 140.8.0-160000.1.1
  • MozillaFirefox-translations-other >= 140.8.0-160000.1.1
 Patchnames:
SUSE-SLES-16.0-388
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5
  • MozillaFirefox >= 140.8.0-112.301.1
  • MozillaFirefox-devel >= 140.8.0-112.301.1
  • MozillaFirefox-translations-common >= 140.8.0-112.301.1
 Patchnames:
SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-812
SUSE Linux Enterprise Server for SAP Applications 15 SP4
  • MozillaFirefox >= 140.8.0-150200.152.222.1
  • MozillaFirefox-devel >= 140.8.0-150200.152.222.1
  • MozillaFirefox-translations-common >= 140.8.0-150200.152.222.1
  • MozillaFirefox-translations-other >= 140.8.0-150200.152.222.1
 Patchnames:
SUSE-SLE-Product-SLES_SAP-15-SP4-2026-871
SUSE Linux Enterprise Server for SAP Applications 15 SP5
  • MozillaFirefox >= 140.8.0-150200.152.222.1
  • MozillaFirefox-devel >= 140.8.0-150200.152.222.1
  • MozillaFirefox-translations-common >= 140.8.0-150200.152.222.1
  • MozillaFirefox-translations-other >= 140.8.0-150200.152.222.1
 Patchnames:
SUSE-SLE-Product-SLES_SAP-15-SP5-2026-871
SUSE Linux Enterprise Server for SAP Applications 15 SP6
  • MozillaFirefox >= 140.8.0-150200.152.222.1
  • MozillaFirefox-devel >= 140.8.0-150200.152.222.1
  • MozillaFirefox-translations-common >= 140.8.0-150200.152.222.1
  • MozillaFirefox-translations-other >= 140.8.0-150200.152.222.1
 Patchnames:
SUSE-SLE-Product-SLES_SAP-15-SP6-2026-871
SUSE Linux Enterprise Workstation Extension 15 SP7
  • MozillaThunderbird >= 140.8.0-150200.8.260.1
  • MozillaThunderbird-translations-common >= 140.8.0-150200.8.260.1
  • MozillaThunderbird-translations-other >= 140.8.0-150200.8.260.1
 Patchnames:
SUSE-SLE-Product-WE-15-SP7-2026-880
openSUSE Leap 15.6
  • MozillaFirefox >= 140.8.0-150200.152.222.1
  • MozillaFirefox-branding-upstream >= 140.8.0-150200.152.222.1
  • MozillaFirefox-devel >= 140.8.0-150200.152.222.1
  • MozillaFirefox-translations-common >= 140.8.0-150200.152.222.1
  • MozillaFirefox-translations-other >= 140.8.0-150200.152.222.1
  • MozillaThunderbird >= 140.8.0-150200.8.260.1
  • MozillaThunderbird-translations-common >= 140.8.0-150200.8.260.1
  • MozillaThunderbird-translations-other >= 140.8.0-150200.8.260.1
 Patchnames:
openSUSE-SLE-15.6-2026-871
openSUSE-SLE-15.6-2026-880
openSUSE Leap 16.0
  • MozillaFirefox >= 140.8.0-160000.1.1
  • MozillaFirefox-branding-upstream >= 140.8.0-160000.1.1
  • MozillaFirefox-devel >= 140.8.0-160000.1.1
  • MozillaFirefox-translations-common >= 140.8.0-160000.1.1
  • MozillaFirefox-translations-other >= 140.8.0-160000.1.1
  • MozillaThunderbird >= 140.8.1-bp160.1.1
  • MozillaThunderbird-openpgp-librnp >= 140.8.1-bp160.1.1
  • MozillaThunderbird-translations-common >= 140.8.1-bp160.1.1
  • MozillaThunderbird-translations-other >= 140.8.1-bp160.1.1
 Patchnames:
openSUSE-Leap-16.0-388
openSUSE-Leap-16.0-packagehub-170
openSUSE Tumbleweed
  • MozillaFirefox >= 148.0-1.1
  • MozillaFirefox-branding-upstream >= 148.0-1.1
  • MozillaFirefox-devel >= 148.0-1.1
  • MozillaFirefox-translations-common >= 148.0-1.1
  • MozillaFirefox-translations-other >= 148.0-1.1
  • MozillaThunderbird >= 140.8.0-1.1
  • MozillaThunderbird-openpgp-librnp >= 140.8.0-1.1
  • MozillaThunderbird-translations-common >= 140.8.0-1.1
  • MozillaThunderbird-translations-other >= 140.8.0-1.1
  • firefox-esr >= 140.8.0-1.1
  • firefox-esr-branding-upstream >= 140.8.0-1.1
  • firefox-esr-translations-common >= 140.8.0-1.1
  • firefox-esr-translations-other >= 140.8.0-1.1
 Patchnames:
openSUSE-Tumbleweed-2026-10242
openSUSE-Tumbleweed-2026-10248
openSUSE-Tumbleweed-2026-10257

List of packages in QA

Product(s) Package(s)
SUSE Linux Enterprise Server 16.0
  • MozillaFirefox >= 140.8.0-160000.1.1
  • MozillaFirefox-devel >= 140.8.0-160000.1.1
  • MozillaFirefox-translations-common >= 140.8.0-160000.1.1
  • MozillaFirefox-translations-other >= 140.8.0-160000.1.1

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Linux Enterprise Desktop 15 SP7 MozillaFirefox Released
SUSE Linux Enterprise Desktop 15 SP7 MozillaThunderbird Released
SUSE Linux Enterprise High Performance Computing 15 SP7 MozillaFirefox Released
SUSE Linux Enterprise Module for Desktop Applications 15 SP7 MozillaFirefox Released
SUSE Linux Enterprise Module for Package Hub 15 SP7 MozillaThunderbird Released
SUSE Linux Enterprise Server 15 SP7 MozillaFirefox Released
SUSE Linux Enterprise Server 15 SP7 MozillaThunderbird Released
SUSE Linux Enterprise Server 16.0 MozillaFirefox In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP7 MozillaFirefox Released
SUSE Linux Enterprise Server for SAP Applications 15 SP7 MozillaThunderbird Released
SUSE Linux Enterprise Server for SAP applications 16.0 MozillaFirefox Released
SUSE Linux Enterprise Workstation Extension 15 SP7 MozillaThunderbird Released
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS MozillaFirefox Released
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS MozillaFirefox Released
SUSE Linux Enterprise Server 12 SP5-LTSS MozillaFirefox Released
SUSE Linux Enterprise Server 15 SP4-LTSS MozillaFirefox Released
SUSE Linux Enterprise Server 15 SP5-LTSS MozillaFirefox Released
SUSE Linux Enterprise Server 15 SP6-LTSS MozillaFirefox Released
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 MozillaFirefox Released
SUSE Linux Enterprise Server for SAP Applications 15 SP6 MozillaFirefox Released
Products past their end of life and not receiving proactive updates anymore.
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS MozillaFirefox Released
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS MozillaFirefox Released
SUSE Linux Enterprise Server for SAP Applications 15 SP4 MozillaFirefox Released
SUSE Linux Enterprise Server for SAP Applications 15 SP5 MozillaFirefox Released

SUSE Timeline for this CVE

CVE page created: Fri Feb 20 12:45:15 2026
CVE page last modified: Fri May 8 11:22:12 2026