The Visualizer WordPress plugin before 4.0.6 does not properly authorise chart-deletion requests, performing only a site-wide capability check with no per-object ownership verification, allowing users with the Contributor role and above to permanently delete any chart on the site, including charts created by other users such as administrators.
https://wpscan.com/vulnerability/12a30aca-9b78-4ee8-9cf0-29e579ea5a0b/