The 20-year-old scored on his debut for Paul Sturrock's side in a 3-2 defeat at the hands of Exeter City on the opening day of the season.
Since then, Cornick has made 13 appearances for the Glovers and scored three goals.
The loan extension means Cornick will now remain at Huish Park until November.
Restore Data
| Team | P | W | D | L | F | A | GD | PTS | |
| 1 | Gateshead | 7 | 5 | 2 | 0 | 16 | 5 | 11 | 17 |
| 2 | Rochdale | 8 | 5 | 2 | 1 | 13 | 3 | 10 | 17 |
| 3 | Forest Green RoversForest Green | 8 | 5 | 2 | 1 | 15 | 6 | 9 | 17 |
| 4 | York City | 8 | 5 | 2 | 1 | 12 | 6 | 6 | 17 |
| 5 | Eastleigh | 8 | 5 | 1 | 2 | 12 | 8 | 4 | 16 |
| 6 | Barnet | 8 | 5 | 0 | 3 | 16 | 10 | 6 | 15 |
| 7 | Hartlepool UnitedHartlepool | 8 | 3 | 4 | 1 | 7 | 5 | 2 | 13 |
| 8 | Woking | 8 | 4 | 1 | 3 | 8 | 8 | 0 | 13 |
| 9 | Yeovil TownYeovil | 8 | 4 | 0 | 4 | 12 | 12 | 0 | 12 |
| 10 | Aldershot TownAldershot | 8 | 3 | 2 | 3 | 15 | 14 | 1 | 11 |
| 11 | Oldham AthleticOldham | 8 | 2 | 5 | 1 | 10 | 9 | 1 | 11 |
| 12 | Solihull MoorsSolihull | 8 | 3 | 2 | 3 | 9 | 9 | 0 | 11 |
| 13 | Southend UnitedSouthend | 7 | 2 | 4 | 1 | 9 | 6 | 3 | 10 |
| 14 | Dagenham & RedbridgeDag & Red | 8 | 2 | 4 | 2 | 10 | 9 | 1 | 10 |
| 15 | Halifax TownHalifax | 8 | 2 | 4 | 2 | 6 | 6 | 0 | 10 |
| 16 | AltrinchamAltrincham | 8 | 3 | 1 | 4 | 9 | 11 | -2 | 10 |
| 17 | Sutton UnitedSutton | 8 | 2 | 3 | 3 | 11 | 12 | -1 | 9 |
| 18 | Braintree TownBraintree | 8 | 1 | 4 | 3 | 4 | 8 | -4 | 7 |
| 19 | Boston UnitedBoston | 8 | 2 | 1 | 5 | 8 | 15 | -7 | 7 |
| 20 | Maidenhead UnitedMaidenhead | 8 | 1 | 2 | 5 | 9 | 14 | -5 | 5 |
| 21 | WealdstoneWealdstone | 8 | 1 | 2 | 5 | 4 | 9 | -5 | 5 |
| 22 | Fylde | 7 | 1 | 2 | 4 | 9 | 15 | -6 | 5 |
| 23 | Tamworth | 7 | 1 | 2 | 4 | 5 | 15 | -10 | 5 |
| 24 | Ebbsfleet | 8 | 0 | 2 | 6 | 4 | 18 | -14 | 2 |
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