Is it legal to upload CC BY papers to academia.edu? Terms of Use are vague on this There have been discussions regarding academia.edu's Terms of Use (https://www.academia.edu/terms) and some responses have stated that it is impossible to upload published papers to academia even with the most liberal copyright licenses is illegal (Why does academia.edu reserve the right to sell, modify, and &quot;exploit&quot; my papers if I post them there?). They have recently updated their terms of use and changed the paragraph "License granted by Member".

However, does this new agreement allow articles under CC BY licenses of open access journals to be uploaded? The new terms state that academia may modify and sublicense any materials, but that they will not claim ownership. Is this sufficient for legally uploading a document licensed under CC BY?

Edit: To further clarify, CC BY requires the citation of the original publication usually embedded in final PDFs. Do the current terms of use comply to CC BY by means of the statement that academia.edu will not claim ownership?
If you own the copyright of the paper, which is common for open access papers released under a CC BY license, then you can do whatever you want with it, provided you haven't signed any separate agreement not to do that.  The Creative Commons license is irrelevant, because it's not exclusive: you can distribute the paper under other licenses as well, so there's no legal obstacle to giving Academia.edu whatever non-exclusive rights they want.  (I would never give them the rights they ask for, but that's a personal decision.)

If you don't own the copyright, then you are stuck.  The CC BY license requires attribution for derivative works, and the Academia.edu license does not, so they are asking for more rights than the CC BY license guarantees.  Unless you are in a position to grant those rights (as the copyright holder or through some other agreement), there's nothing you can do.