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 Mozilla Firefox version 140.0Upgrade to the latest version of Mozilla Firefox | 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 pipewire-spa-plugins-0_2Upgrade gstreamer-plugin-pipewireUpgrade libpipewire-0_3-0Upgrade MozillaFirefoxUpgrade pipewire-modules-0_3Upgrade pipewire-langUpgrade MozillaThunderbird-translations-otherUpgrade mozillafirefox-branding-upstreamUpgrade pipewire-toolsUpgrade MozillaFirefox-translations-otherUpgrade xdg-desktop-portal-langUpgrade MozillaFirefox-develUpgrade pipewire-spa-toolsUpgrade MozillaThunderbird-translations-commonUpgrade pipewireUpgrade mozillafirefox-branding-sleUpgrade xdg-desktop-portal-develUpgrade MozillaThunderbirdUpgrade MozillaFirefox-translations-commonUpgrade pipewire-modulesUpgrade xdg-desktop-portal | Jul 18, 2025 | Jun 24, 2025 |
| Ubuntu | — | Upgrade thunderbird | Jun 26, 2025 | Jun 24, 2025 |
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