By misusing a race in our notification code, an attacker could have forcefully hidden the notification for pages that had received full screen and pointer lock access, which could have been used for spoofing attacks. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade firefoxUpgrade thunderbird | May 4, 2022 | Dec 8, 2021 |
| Alpine Linux | — | Upgrade thunderbirdUpgrade firefoxUpgrade firefox-esrUpgrade librewolf | Aug 22, 2024 | Dec 8, 2021 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Dec 8, 2021 |
| Centos_linux | — | Upgrade thunderbird-debugsourceUpgrade firefoxUpgrade thunderbirdUpgrade firefox-debugsourceUpgrade thunderbird-debuginfoUpgrade firefox-debuginfo | Dec 9, 2021 | Dec 8, 2021 |
| Debian | — | Upgrade firefox-esrUpgrade thunderbird | Dec 30, 2021 | Dec 8, 2021 |
| Gentoo Linux | — | Upgrade www-client/firefox.Upgrade www-client/firefox-bin.Upgrade mail-client/thunderbird.Upgrade mail-client/thunderbird-bin. | Feb 22, 2022 | Dec 8, 2021 |
| Mfsa2021 52 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 95.0 | Dec 8, 2021 | Dec 7, 2021 |
| Mfsa2021 53 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 91.4 | Dec 8, 2021 | Dec 7, 2021 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 91.4 | Dec 8, 2021 | Dec 7, 2021 |
| Oracle Solaris | — | Upgrade web/browser/firefox to version 91.4.0-11.4.41.0.1.107.2 on Solaris 11.4Upgrade mail/thunderbird to version 91.4.0-11.4.41.0.1.107.2 on Solaris 11.4Upgrade web/data/firefox-bookmarks to version 91.4.0-11.4.41.0.1.107.2 on Solaris 11.4 | Jan 19, 2022 | Dec 8, 2021 |
| Oracle_linux | — | Upgrade firefoxUpgrade thunderbird | Dec 9, 2021 | Dec 7, 2021 |
| Redhat_linux | — | No solution existsUpgrade firefox-debuginfoUpgrade thunderbird-debuginfoUpgrade thunderbirdUpgrade thunderbird-debugsourceUpgrade firefox-debugsource | Dec 9, 2021 | Dec 8, 2021 |
| Rocky_linux | — | Upgrade thunderbird-debugsourceUpgrade firefox-debugsourceUpgrade thunderbirdUpgrade firefoxUpgrade thunderbird-debuginfoUpgrade firefox-debuginfo | Mar 12, 2024 | Dec 8, 2021 |
| Suse | — | Upgrade MozillaFirefox-translations-otherUpgrade MozillaFirefoxUpgrade MozillaThunderbird-translations-commonUpgrade MozillaThunderbird-translations-otherUpgrade MozillaFirefox-translations-commonUpgrade MozillaFirefox-develUpgrade mozillafirefox-branding-upstreamUpgrade MozillaThunderbird | Dec 11, 2021 | Dec 8, 2021 |
| Ubuntu | — | Upgrade firefoxUpgrade thunderbird | Dec 10, 2021 | Dec 8, 2021 |
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