Slackware also updated ca-certificates yesterday (Wed Oct 21 00:53:24 UTC 2026). The curl commands keks24 mentioned fails as expected

https://ftp.osuosl.org/pub/slackware/slackware64-15.0/Change...

To check, from keks24:

     % curl --url="https://dv-g3b-emudhra.we-have-a-problem.com/"
     % curl --url="https://dv-g3b-aaa-emudhra.we-have-a-problem.com/"