I've just approved the website updates for new security updates across all branches. Depending on how you use your database, these updates can be critical for updating or not at all. You should go look at the announcement right away to see if you need to upgrade! (if the link is a 404, you need to wait for the mirrors to sync up which should take less than an hour)
The same bugs are present in the 8.3 betas, and fixes will be included in 8.3RC1, due to be announced shortly.
Also, note that this it the EOL release for 7.3 - if you're still on 7.3, you need to upgrade now.
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