* curl is mature enough that the chance of an impactful bug is basically zero * if there is such a bug, I'm sure someone will figure out how to get in touch with Daniel and co * if there is such a bug, it's more important that it gets patched in package managers and rolled out. Upstream releases can wait.
No, that is the point, they are not going to accept your vuln report. They are taking a holiday.
But the message is pretty clear: if you’re not a paid customer, you are not getting patches or support from upstream during this month.
Plan accordingly.
Curl is also something that should be thoroughly sandboxed to begin with, because even if there are no vulnerabilities in curl itself, its a tool for downloading arbitrary data over the internet, and you may well accidentally trigger vulnerabilities in every other part of your environment just by downloading arbitrary data to your shell...
Pipe it to bash? game over
Pipe it to less/more? Better hope your distro keeps those patched
Open the file in a browser or PDF reader? Hey, look at all this shiny new attack surface!
And as such, you need to already be sandboxing the tool (since it processes untrusted data you received over the internet).