Navigations were being allowed when dragging a URL from a cross-origin iframe into the same tab which could lead to website spoofing attacks. This vulnerability affects Firefox < 109, Thunderbird < 102.7, and Firefox ESR < 102.7.
https://www.mozilla.org/security/advisories/mfsa2023-03/
https://www.mozilla.org/security/advisories/mfsa2023-02/