Description
Links in a sandboxed iframe could open an external app on Android without the required "allow-" permission. This vulnerability affects Firefox < 144 and Thunderbird < 144.
Problem types
Sandboxed iframes allowed links to open in external apps (Android only)
Product status
Credits
Axel Chong (@Haxatron)
References
bugzilla.mozilla.org/show_bug.cgi?id=1818679
www.mozilla.org/security/advisories/mfsa2025-81/
www.mozilla.org/security/advisories/mfsa2025-84/
