Through a series of navigations, Firefox could have entered fullscreen mode without notification or warning to the user. This could lead to spoofing attacks on the browser UI including phishing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.
CVSS Details
- CVSS 3.1 Base Score: 4.3
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade firefoxUpgrade thunderbird | May 4, 2022 | Dec 8, 2021 |
| Alpine Linux | — | Upgrade librewolfUpgrade firefoxUpgrade thunderbirdUpgrade firefox-esr | 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 firefox-debuginfoUpgrade firefox-debugsourceUpgrade thunderbird-debuginfoUpgrade thunderbird-debugsourceUpgrade thunderbirdUpgrade firefox | Nov 9, 2021 | Nov 3, 2021 |
| Debian | — | Upgrade firefox-esrUpgrade thunderbird | Dec 30, 2021 | Dec 8, 2021 |
| Gentoo Linux | — | Upgrade www-client/firefox.Upgrade mail-client/thunderbird.Upgrade www-client/firefox-bin.Upgrade mail-client/thunderbird-bin. | Feb 22, 2022 | Dec 8, 2021 |
| Mfsa2021 48 | — | Upgrade to Mozilla Firefox version 94.0Upgrade to the latest version of Mozilla Firefox | Nov 3, 2021 | Nov 2, 2021 |
| Mfsa2021 49 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 91.3 | Nov 3, 2021 | Nov 2, 2021 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 91.3 | Nov 4, 2021 | Nov 3, 2021 |
| Oracle Solaris | — | Upgrade web/data/firefox-bookmarks to version 91.3.0-11.4.40.0.1.107.1 on Solaris 11.4Upgrade web/browser/firefox to version 91.3.0-11.4.40.0.1.107.1 on Solaris 11.4Upgrade mail/thunderbird to version 91.3.0-11.4.40.0.1.107.1 on Solaris 11.4 | Dec 13, 2021 | Dec 8, 2021 |
| Oracle_linux | — | Upgrade thunderbirdUpgrade firefox | Nov 4, 2021 | Nov 2, 2021 |
| Redhat_linux | — | Upgrade firefox-debugsourceUpgrade firefoxUpgrade thunderbirdUpgrade firefox-debuginfoNo solution existsUpgrade thunderbird-debuginfoUpgrade thunderbird-debugsource | Nov 9, 2021 | Nov 3, 2021 |
| Rocky_linux | — | Upgrade thunderbird-debuginfoUpgrade firefox-debuginfoUpgrade firefoxUpgrade thunderbird-debugsourceUpgrade thunderbirdUpgrade firefox-debugsource | May 5, 2022 | Dec 8, 2021 |
| Suse | — | Upgrade MozillaThunderbird-translations-otherUpgrade MozillaFirefox-translations-otherUpgrade MozillaThunderbird-translations-commonUpgrade mozillafirefox-branding-upstreamUpgrade MozillaFirefox-translations-commonUpgrade MozillaFirefoxUpgrade MozillaFirefox-develUpgrade MozillaThunderbird | Nov 11, 2021 | Nov 3, 2021 |
| Ubuntu | — | Upgrade firefoxUpgrade thunderbird | Nov 4, 2021 | Nov 3, 2021 |
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