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This could be used to gain fullscreen access for UI spoofing and could also lead to cross-origin attacks on targeted websites. Note: This issue is a different issue from CVE-2020-26954 and only affected Firefox for Android. Other operating systems are unaffected. 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This could be used to gain fullscreen access for UI spoofing and could also lead to cross-origin attacks on targeted websites. Note: This issue is a different issue from CVE-2020-26954 and only affected Firefox for Android. Other operating systems are unaffected. This vulnerability affects Firefox < 86.","Type":"Description","Title":null},{"CveYear":"2021","CveId":"23976","Ordinal":"2","NoteData":"2021-02-25","Type":"Other","Title":"Published"},{"CveYear":"2021","CveId":"23976","Ordinal":"3","NoteData":"2021-04-30","Type":"Other","Title":"Modified"}]}}}