By checking the result of calls to `window.open` with specifically set protocol handlers, an attacker could determine if the application which implements that protocol handler is installed. This vulnerability affects Firefox < 131, Firefox ESR < 128.3, Thunderbird < 128.3, and Thunderbird < 131.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade firefoxUpgrade thunderbird | Oct 7, 2024 | Oct 1, 2024 |
| Debian | — | Upgrade thunderbird | Jul 27, 2026 | Jul 27, 2026 |
| Mfsa2024 46 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 131.0 | Oct 2, 2024 | Oct 1, 2024 |
| Mfsa2024 47 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 128.3 | Oct 2, 2024 | Oct 1, 2024 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 131.0 | Oct 2, 2024 | Oct 1, 2024 |
| Oracle_linux | — | Upgrade thunderbirdUpgrade firefox | Oct 16, 2024 | Oct 1, 2024 |
| Redhat_linux | — | Upgrade firefox-x11Upgrade thunderbird-debuginfoUpgrade firefox-debugsourceUpgrade firefox-debuginfoUpgrade thunderbirdUpgrade firefoxUpgrade thunderbird-debugsourceNo solution exists | Oct 7, 2024 | Oct 1, 2024 |
| Rocky_linux | — | Upgrade firefox-debuginfoUpgrade thunderbirdUpgrade thunderbird-debugsourceUpgrade firefoxUpgrade thunderbird-debuginfoUpgrade firefox-debugsource | Nov 4, 2024 | Oct 1, 2024 |
| Suse | — | Upgrade MozillaThunderbird-translations-otherUpgrade MozillaThunderbirdUpgrade MozillaFirefox-translations-commonUpgrade MozillaThunderbird-translations-commonUpgrade MozillaFirefox-translations-otherUpgrade mozjs128Upgrade MozillaFirefoxUpgrade mozjs128-develUpgrade MozillaFirefox-develUpgrade mozillafirefox-branding-upstreamUpgrade libmozjs-128-0 | Dec 31, 2024 | Oct 1, 2024 |
| Ubuntu | — | Upgrade thunderbirdUpgrade firefox | Oct 8, 2024 | Oct 1, 2024 |
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