Thunderbird cached CORS preflight responses across IP address changes. This allowed circumventing CORS with DNS rebinding. This vulnerability was fixed in Firefox 141, Firefox ESR 140.1, Thunderbird 141, and Thunderbird 140.1.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Freebsd | — | Upgrade firefoxUpgrade thunderbirdUpgrade firefox-esrUpgrade thunderbird-esr | Jul 25, 2025 | Jul 24, 2025 |
| Mfsa2025 56 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 141.0 | Jul 23, 2025 | Jul 22, 2025 |
| Mfsa2025 59 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 140.1 | Jul 23, 2025 | Jul 22, 2025 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 140.1Upgrade to the latest version of Mozilla Thunderbird | Jul 23, 2025 | Jul 22, 2025 |
| Suse | — | Upgrade pipewire-modulesUpgrade MozillaThunderbird-translations-commonUpgrade libpipewire-0_3-0Upgrade MozillaFirefoxUpgrade mozillafirefox-branding-sleUpgrade pipewire-spa-plugins-0_2Upgrade xdg-desktop-portalUpgrade pipewire-spa-toolsUpgrade pipewireUpgrade MozillaFirefox-translations-commonUpgrade MozillaFirefox-develUpgrade pipewire-langUpgrade gstreamer-plugin-pipewireUpgrade MozillaThunderbirdUpgrade pipewire-modules-0_3Upgrade xdg-desktop-portal-develUpgrade pipewire-toolsUpgrade MozillaThunderbird-translations-otherUpgrade MozillaFirefox-translations-otherUpgrade mozillafirefox-branding-upstreamUpgrade xdg-desktop-portal-lang | Dec 5, 2025 | Jul 25, 2025 |
| Ubuntu | — | Upgrade thunderbird | Jul 24, 2025 | Jul 22, 2025 |
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