Server-side request forgery (SSRF) in the Podcast Importer SecondLine (podcast-importer-secondline) plugin 1.1.4 for WordPress via the podcast_feed parameter in a secondline_import_initialize action to the secondlinepodcastimport page.
https://wordpress.org/plugins/podcast-importer-secondline/#developers
https://github.com/secwx/research/blob/main/cve/CVE-2020-24149.md