OGC API - Process execution requests can use the subscriber object to requests to internal HTTP services.

The issue has been patched in master branch and made available as part of the 0.23.3 release. The patch disables any HTTP requests made to internal resources by default (unless explicitly defined in configuration by a new allow internal requests directive.

The commit/fix can be found in 3a63f5b0cc6275e3ae0edb47726b13a43cdd90ef.

Users can update existing applications by disabling process based resources in their pygeoapi config, until 0.23.3 can be installed and deployed.