The exception page for the HTTPS-Only feature, displayed when a website is opened via HTTP, lacked an anti-clickjacking delay, potentially allowing an attacker to trick a user into granting an exception and loading a webpage over HTTP. This vulnerability was fixed in Firefox 140 and Thunderbird 140.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Freebsd | — | Upgrade firefox | Jul 5, 2025 | Jul 4, 2025 |
| Mfsa2025 51 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 140.0 | Jun 25, 2025 | Jun 24, 2025 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 140.0Upgrade to the latest version of Mozilla Thunderbird | Jul 3, 2025 | Jun 24, 2025 |
| Suse | — | Upgrade gstreamer-plugin-pipewireUpgrade pipewire-toolsUpgrade pipewire-modules-0_3Upgrade pipewireUpgrade pipewire-spa-toolsUpgrade MozillaThunderbird-translations-otherUpgrade xdg-desktop-portal-develUpgrade xdg-desktop-portal-langUpgrade MozillaFirefox-translations-commonUpgrade MozillaFirefox-translations-otherUpgrade MozillaThunderbirdUpgrade xdg-desktop-portalUpgrade pipewire-langUpgrade MozillaFirefox-develUpgrade pipewire-spa-plugins-0_2Upgrade MozillaFirefoxUpgrade mozillafirefox-branding-sleUpgrade mozillafirefox-branding-upstreamUpgrade MozillaThunderbird-translations-commonUpgrade pipewire-modulesUpgrade libpipewire-0_3-0 | Jul 22, 2025 | Jun 24, 2025 |
| Ubuntu | — | Upgrade thunderbird | Jun 26, 2025 | Jun 24, 2025 |
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