Post Blocks & Tools Stored Cross-Site Scripting Vulnerability in WordPress

A stored cross-site scripting vulnerability has been identified in the Post Blocks & Tools plugin for WordPress, affecting all versions through 1.3.0. The issue arises in the Posts Slider block, where the 'sliderStyle' block attribute is not properly sanitized or escaped. This flaw allows authenticated attackers with author-level access or higher to inject arbitrary scripts into pages, which are executed when users view the affected page.

Impact

Exploitation of this vulnerability allows for stored cross-site scripting, where injected scripts are executed in the context of the user viewing the page.

Remediation

Users are advised to update the Post Blocks & Tools plugin to version 1.3.1 or a newer patched version.