Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 146, Firefox ESR 115.31, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade firefox-x11Upgrade firefoxUpgrade thunderbird | Dec 15, 2025 | Dec 10, 2025 |
| Amazon Linux Ami 2 | — | Upgrade thunderbirdUpgrade firefox | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade firefoxUpgrade firefox-debuginfoUpgrade firefox-debugsource | Jan 12, 2026 | Dec 9, 2025 |
| Debian | — | Upgrade firefox-esrUpgrade thunderbird | Dec 12, 2025 | Dec 12, 2025 |
| Freebsd | — | Upgrade firefoxUpgrade thunderbirdUpgrade firefox-esr | Jan 27, 2026 | Dec 11, 2025 |
| Mfsa2025 92 | — | Upgrade to Mozilla Firefox version 146.0Upgrade to the latest version of Mozilla Firefox | Dec 10, 2025 | Dec 9, 2025 |
| Mfsa2025 93 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 115.31 | Dec 10, 2025 | Dec 9, 2025 |
| Mfsa2025 94 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 140.6 | Dec 10, 2025 | Dec 9, 2025 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 140.6 | Dec 11, 2025 | Dec 9, 2025 |
| Oracle_linux | — | Upgrade firefoxUpgrade thunderbirdUpgrade firefox-x11 | Dec 11, 2025 | Dec 9, 2025 |
| Redhat_linux | — | Upgrade thunderbirdUpgrade thunderbird-debuginfoUpgrade thunderbird-debugsourceUpgrade firefoxUpgrade firefox-x11Upgrade firefox-debuginfoNo solution existsUpgrade firefox-debugsource | Dec 11, 2025 | Dec 9, 2025 |
| Rocky_linux | — | Upgrade firefox-debuginfoUpgrade firefox-debugsourceUpgrade thunderbird-debuginfoUpgrade thunderbirdUpgrade firefoxUpgrade firefox-x11Upgrade thunderbird-debugsource | Jan 6, 2026 | Jan 5, 2026 |
| Ubuntu | — | Upgrade thunderbird | Feb 4, 2026 | Feb 2, 2026 |
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