An attacker was able to bypass the `connect-src` directive of a Content Security Policy by manipulating subdocuments. This would have also hidden the connections from the Network tab in Devtools. 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 xdg-desktop-portal-langUpgrade pipewireUpgrade pipewire-langUpgrade xdg-desktop-portalUpgrade pipewire-modules-0_3Upgrade pipewire-modulesUpgrade pipewire-toolsUpgrade MozillaFirefox-translations-commonUpgrade mozillafirefox-branding-upstreamUpgrade MozillaThunderbird-translations-commonUpgrade MozillaFirefox-develUpgrade xdg-desktop-portal-develUpgrade MozillaThunderbirdUpgrade MozillaFirefox-translations-otherUpgrade pipewire-spa-toolsUpgrade MozillaThunderbird-translations-otherUpgrade mozillafirefox-branding-sleUpgrade gstreamer-plugin-pipewireUpgrade pipewire-spa-plugins-0_2Upgrade libpipewire-0_3-0Upgrade MozillaFirefox | Jul 18, 2025 | Jun 24, 2025 |
| Ubuntu | — | Upgrade thunderbird | Jun 26, 2025 | Jun 24, 2025 |
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