If a user visited a webpage with an invalid TLS certificate, and granted an exception, the webpage was able to provide a WebAuthn challenge that the user would be prompted to complete. This is in violation of the WebAuthN spec which requires "a secure transport established without errors". This vulnerability was fixed in Firefox 140 and Thunderbird 140.
CVSS Details
- CVSS 3.1 Base Score: 9.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Freebsd | freebsd-upgrade-package-firefox | Jul 5, 2025 | Jul 4, 2025 | |
| Mfsa2025 51 | mozilla-firefox-upgrade-140_0 | Jun 25, 2025 | Jun 24, 2025 | |
| Mozilla Thunderbird | mozilla-thunderbird-upgrade-140_0 | Jul 3, 2025 | Jun 24, 2025 | |
| Suse | — | suse-upgrade-gstreamer-plugin-pipewiresuse-upgrade-libpipewire-0_3-0suse-upgrade-mozillafirefoxsuse-upgrade-mozillafirefox-branding-slesuse-upgrade-mozillafirefox-branding-upstreamsuse-upgrade-mozillafirefox-develsuse-upgrade-mozillafirefox-translations-commonsuse-upgrade-mozillafirefox-translations-othersuse-upgrade-mozillathunderbirdsuse-upgrade-mozillathunderbird-translations-commonsuse-upgrade-mozillathunderbird-translations-othersuse-upgrade-pipewiresuse-upgrade-pipewire-langsuse-upgrade-pipewire-modulessuse-upgrade-pipewire-modules-0_3suse-upgrade-pipewire-spa-plugins-0_2suse-upgrade-pipewire-spa-toolssuse-upgrade-pipewire-toolssuse-upgrade-xdg-desktop-portalsuse-upgrade-xdg-desktop-portal-develsuse-upgrade-xdg-desktop-portal-lang | Jul 22, 2025 | Jun 24, 2025 |
| Ubuntu | ubuntu-upgrade-thunderbird | Jun 26, 2025 | Jun 24, 2025 |
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