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Sandbox escape due to use-after-free in the DOM: Navigation component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade thunderbirdUpgrade firefox-x11Upgrade firefox | Aug 5, 2026 | Aug 4, 2026 |
| Amazon Linux Ami 2 | — | Upgrade firefox | Oct 19, 2026 | Oct 19, 2026 |
| Amazon_linux_2023 | — | Upgrade firefoxUpgrade firefox-debuginfoUpgrade firefox-debugsource | Aug 18, 2026 | Jul 21, 2026 |
| Debian | — | Upgrade thunderbirdUpgrade firefox-esr | Jul 23, 2026 | Jul 23, 2026 |
| Mfsa2026 68 | — | Upgrade to Mozilla Firefox version 153.0Upgrade to the latest version of Mozilla Firefox | Jul 21, 2026 | Jul 21, 2026 |
| Mfsa2026 69 | — | Upgrade to Mozilla Firefox ESR version 115.38Upgrade to the latest version of Mozilla Firefox | Jul 21, 2026 | Jul 21, 2026 |
| Mfsa2026 70 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 140.13 | Jul 21, 2026 | Jul 21, 2026 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 140.13 | Jul 21, 2026 | Jul 21, 2026 |
| Oracle_linux | — | Upgrade firefox-x11Upgrade thunderbirdUpgrade firefox | Oct 22, 2026 | Jul 21, 2026 |
| Redhat_linux | — | Upgrade thunderbird-debugsourceNo solution existsUpgrade firefox-debugsourceUpgrade firefox-debuginfoUpgrade thunderbird-debuginfoUpgrade firefox-x11Upgrade firefoxUpgrade thunderbird | Jul 27, 2026 | Jul 21, 2026 |
| Rocky_linux | — | Upgrade firefoxUpgrade thunderbirdUpgrade thunderbird-debuginfoUpgrade firefox-x11Upgrade firefox-debuginfoUpgrade thunderbird-debugsourceUpgrade firefox-debugsource | Jul 31, 2026 | Jul 29, 2026 |
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