This is a path traversal vulnerability that impacts the CreateIndexHandler and DeleteIndexHandler found within Bleve search library. These vulnerabilities enable the attacker to delete any directory owned by the user recursively, and create a new directory in any location which the server has write permissions to. This is Google's proof of concept exploit.
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The Azure Storage Encryption library in Java and other languages is vulnerable to a CBC Padding Oracle attack, similar to CVE-2020-8911. The library is not vulnerable to the equivalent of CVE-2020-8912, but only because it currently only supports AES-CBC as encryption mode. This is Google's proof of concept exploit.
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