Update 9/12/2026, 5:22 p.m. ET: A spokesperson for A24 told Kotaku that the company is “not asserting any right to prevent others from creating their own SCP-based works” and that V/H/S: SCP is intended to be a “tribute” to the greater SCP universe.
“A24’s ‘worldwide rights’ cover the next film in the V/H/S franchise,” reads A24’s statement. “It is not a claim of exclusivity over the SCP Foundation universe or its concepts, and we’re not asserting any right to prevent others from creating their own SCP-based works… The project is in development and is meant as a tribute to the community that created this world.”
To me that sounds like they don’t understand the license. People aren’t (too) worried they would keep others from making SCP stuff. CC BY-SA means that the movie itself must be released under the same license, meaning everyone can distribute it for free or make their own derived works, including reusing entire scenes.
I’m afraid they will just get away with it. In the Duksin case, he interfered with SCP operations in Russia (registering a hostile trademark, preventing merch sales and threatening to shut down the website). Here, A24 is explicitly claiming they will just be releasing a movie without claiming any trademark or copyright over existing stuff. While you are right that by the terms of the license they shouldn’t be able to get exclusive rights to any derivative work, it will be much harder to crowdfund a legal defense in this case.