The Link Library WordPress plugin before 7.10.0 does not verify that a requested link belongs to the settings set whose display template is used to render it, allowing unauthenticated users to disclose the telephone number, e-mail address and submitter name stored with links that the settings set is configured not to display.
https://wpscan.com/vulnerability/0eab05a7-8426-40a6-b0ee-5ae3547b842a/