Yes, the hub is identical
Same 5x114.3 PCD and same 56.1 mm centre bore: wheels from Honda Stream bolt on and centre on Subaru Forester without rings. You still need to check the offset and tyres, detailed below.
≈: width estimated from the original tyre size.
Wheel by wheel: offset and tyres
Each original wheel from Honda Stream is compared with the one from Subaru Forester of the same diameter: how much closer the wheel gets to the shock absorber or how far it sticks out of the wheel arch, and whether the tyre keeps the same overall diameter.
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≈6Jx15 ET50 · 195/65R15 — Fits like the original
Compared with the original ≈6.5Jx15 ET48 on Subaru Forester: shock absorber side −4.4 mm, wheel arch side −8.4 mm, tyre diameter −5 % : fit it with the original tyre size of Subaru Forester (205/70R15), not that of Honda Stream.
Comparison for guidance only (estimated width). Check in detail
Before fitting the wheels
An identical hub is not enough: offset, width and diameter change the position of the wheel, and larger calipers can touch a smaller wheel. Original wheels often use bolts or nuts with a specific seat: keep the fixings intended for the wheel, with the thread of Subaru Forester (Ecrous - 12x1.25), tightened to the torque shown on its vehicle page. Finally, check that the size is among the approved fitments for your vehicle. This comparison is for guidance only: have the fitting approved by a professional.
And the other way round: wheels from Subaru Forester on Honda Stream?