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 thunderbirdUpgrade firefox | 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 Mozilla Firefox ESR version 128.3Upgrade to the latest version of Mozilla Firefox | 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 firefoxUpgrade thunderbird-debugsourceUpgrade thunderbirdNo solution existsUpgrade firefox-debuginfoUpgrade firefox-debugsourceUpgrade thunderbird-debuginfoUpgrade firefox-x11 | Oct 7, 2024 | Oct 1, 2024 |
| Rocky_linux | — | Upgrade firefox-debugsourceUpgrade firefox-debuginfoUpgrade thunderbird-debuginfoUpgrade firefoxUpgrade thunderbird-debugsourceUpgrade thunderbird | Nov 4, 2024 | Oct 1, 2024 |
| Suse | — | Upgrade libmozjs-128-0Upgrade mozjs128-develUpgrade mozjs128Upgrade MozillaFirefox-translations-otherUpgrade MozillaFirefoxUpgrade MozillaThunderbird-translations-commonUpgrade MozillaFirefox-develUpgrade MozillaFirefox-translations-commonUpgrade MozillaThunderbirdUpgrade mozillafirefox-branding-upstreamUpgrade MozillaThunderbird-translations-other | Dec 31, 2024 | Oct 1, 2024 |
| Ubuntu | — | Upgrade thunderbirdUpgrade firefox | Oct 8, 2024 | Oct 1, 2024 |
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub