The Mapster WP Maps plugin for WordPress is vulnerable to unauthorized modification of data that can lead to privilege escalation due to an insufficient capability check on the mapsterwpmapssetoptionfromjs() function in all versions up to, and including, 1.5.0. This makes it possible for authenticated attackers, with contributor-level access and above, to update arbitrary options on the WordPress site. This can be leveraged to update the default role for registration to administrator and enable user registration for attackers to gain administrative user access to a vulnerable site.

The Mapster WP Maps plugin for WordPress is vulnerable to Arbitrary User Meta Write in all versions up to, and including, 1.23.0 via the myprofileupdate() function. This is due to the function performing no nonce verification, no capability check, and no allowlist validation on the meta key supplied via the acf-photo-gallery-groups POST parameter before passing both the meta key and its corresponding value directly to updateusermeta(). This makes it possible for authenticated attackers, with Subscriber-level access and above, to update arbitrary user meta values, though privilege escalation is not possible.

The Mapster WP Maps WordPress plugin before 1.24.0 does not perform any authorization or post-status check on a public REST endpoint, allowing unauthenticated users to retrieve the title and full content of any post regardless of its status, including unpublished (draft, pending, private, and trashed) posts.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Mapster Technology Inc. Mapster WP Maps allows Stored XSS.This issue affects Mapster WP Maps: from n/a through 1.2.38.

The Mapster WP Maps plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the popup class parameter in all versions up to, and including, 1.6.0 due to insufficient input sanitization and output escaping. 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 Mapster WP Maps plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple fields in versions up to, and including, 1.20.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers with contributor-level permissions and above to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.