The entire problem with cmd.exe was not known and so obviously not documented when the Rust standard library developers were implementing the API, and the same goes for the standard library developers of every other language. Rust was among the first to fix this problem in their API, with many other languages opting to just document the issues instead of actually protecting users from it.

To take all this information and distill it down to trumpeting "Rust has a CVSS level 10 security vulnerability!!" without context is stupidity at best and maliciously disingenuous at worst.

Nitpicking whether the statement can be construed as true within a certain framing just demonstrates malicious intent when the reality is that users of Go, Python, and Java, whose standard libraries have taken a position of Won't Fix, are in a FAR more dangerous position than Rust users who are actually in the safest position of anyone in any language ecosystem besides perhaps Haskell.