[oneeyedpigeon]

How often do you find yourself running executables from the current directory? Is this a daily thing?

[lanyard-textile]

Gamedev! I could run some crazy cmake command to build and run, or I could just bin/build.

[piekvorst]

For my workflow, yes

I don’t think it’s a severe security vulnerability. The same thing can happen with $home/bin.

[ahepp]

I think it's substantially riskier. At the very least, it means you are trusting any directory you cd into, rather than just trusting your $home/bin.

Stuff that would not typically raise eyebrows has been made risky. You might cd into less privileged user's $home, or some web service's data directory, and suddenly you've given whoever had access to those users, access to your user.

Maybe you could argue "well, I just won't cd outside of my $home", but the sheer unexpectedness of the behavior seems deeply undesirable to me.