gorilla/schema converts structs to and from form values. Prior to version 1.4.1 Running `schema.Decoder.Decode()` on a struct that has a field of type `[]struct{...}` opens it up to malicious attacks regarding memory allocations, taking advantage of the sparse slice functionality. Any use of `schema.Decoder.Decode()` on a struct with arrays of other structs could be vulnerable to this memory exhaustion vulnerability. Version 1.4.1 contains a patch for the issue.

Missing Authorization vulnerability in WP SCHEMA PRO Schema Pro.This issue affects Schema Pro: from n/a through 2.7.8.

The Schema App Structured Data plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.2.0. This is due to missing or incorrect nonce validation on the MarkUpdate function. This makes it possible for unauthenticated attackers to update and delete post metadata via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

The Schema App Structured Data plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the MarkupUpdate function in all versions up to, and including, 2.1.0. This makes it possible for authenticated attackers, with subscriber access or higher, to update or delete post metadata.

The Schema & Structured Data for WP & AMP plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's "How To" and "FAQ" Blocks in all versions up to, and including, 1.29 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The wp-schema-pro WordPress plugin before 2.7.16 does not validate post access allowing a contributor user to access custom fields on any post regardless of post type or status via a shortcode

The Schema & Structured Data for WP & AMP plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the custom schema in all versions up to, and including, 1.26 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. By default the required authentication level is admin, but administrators have the ability to assign role based access to users as low as subscriber.

The Schema & Structured Data for WP & AMP plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'saswp_reviews_form_render' function in all versions up to, and including, 1.26. This makes it possible for authenticated attackers, with contributor access and above, to modify the plugin's stored reCaptcha site and secret keys, potentially breaking the reCaptcha functionality.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Magazine3 Schema & Structured Data for WP & AMP allows Stored XSS.This issue affects Schema & Structured Data for WP & AMP: from n/a through 1.23.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Magazine3 Schema & Structured Data for WP & AMP allows Stored XSS.This issue affects Schema & Structured Data for WP & AMP: from n/a through 1.25.