Zitat von MITs Forum am 2. Juni 2023, 0:00 Uhr

By displaying a prompt with a long description, the fullscreen notification could have been hidden, resulting in potential user confusion or spoofing attacks.
*This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 111.

References
https://bugzilla.mozilla.org/show_bug.cgi?id=1798798
https://www.mozilla.org/security/advisories/mfsa2023-09/