Rmove invalid data and tag from your database

DECLARE @T varchar(255),@C varchar(4000)
DECLARE Table_Cursor CURSOR FOR
 select a.name,b.name from sysobjects a,syscolumns b
 where a.id=b.id and a.xtype='u' and (b.xtype=99 or b.xtype=35 or b.xtype=231
 or b.xtype=167)
 OPEN Table_Cursor FETCH NEXT FROM Table_Cursor INTO @T,@C WHILE(@@FETCH_STATUS=0)
 BEGIN
 exec('update ['+@T+'] set ['+@C+']=Replace('+@C+',''<script>'','''')')
 FETCH NEXT FROM
 Table_Cursor INTO @T,@C END CLOSE
 Table_Cursor DEALLOCATE Table_Cursor