According to the ATO website: Q. Does the 50% CGT discount apply...

According to the ATO website:

Q. Does the 50% CGT discount apply to foreign shares?

A. As you've held the asset for longer than 12 months you're entitled to the 50% CGT discount. If you are an Australian resident your overseas capital gains can be treated in the same way an Australian property would.

For reference, this information is available on the ATO website under Capital Gain on Overseas Assets.

However! There is this, which muddies the waters:
https://www.bdo.com.au/en-au/insights/tax/technical-updates/50-cgt-discount-on-foreign-capital-gains-clawed-back-by-government

Professional advice is recommended.