I know the 7z gui supports CAB files. What I can’t determine is whether the open source code used by SDIO supports CAB files. I’ve found no reference in the source code and there’s no developer’s documentation that I’ve discovered.
So I guess the answer is no until someone can point me to the 7z code in question.
I imagine it wouldn’t be hard to write a batch file to convert cab files to 7z files.