There is a new patch release (4.5.1.020) available to install on the “dev” update provider that fixes an issue introduced with the last patch release.
You can find detailed instructions to update here (including instruction if you are behind a firewall):
Have a good day
[ LDEV-383 ] cfhttp fails
Corrects an error in patch release (4.5.1.019):
[ LDEV-292 ] CFHTTP fails over SSL with SNI