Contributor PHP Object Injection in Schema & Structured Data for WP & AMP <= 1.66 versions.

ampforwpsavestepsdata in the AMP for WP plugin before 0.9.97.21 for WordPress allows stored XSS.

Missing Authorization vulnerability in Magazine3 Schema & Structured Data for WP & AMP schema-and-structured-data-for-wp allows Accessing Functionality Not Properly Constrained by ACLs.This issue affects Schema & Structured Data for WP & AMP: from n/a through <= 1.3.5.

The Schema & Structured Data for WP & AMP WordPress plugin before 1.67 does not perform a capability check when saving several of its fields, nor escape them when outputting them back, allowing users with the editor role and above to inject arbitrary web scripts that execute when a higher privileged user views the affected screen. This is only exploitable on multisite installs, where editors do not hold the unfilteredhtml capability.