In April 2025, a stored Cross-Site Scripting (XSS) vulnerability was identified in the popular Qi Blocks WordPress plugin, specifically affecting versions below 1.4. This vulnerability, now tracked as CVE-2025-1627, allows a user with Contributor permissions to inject malicious scripts into the site using the Table of Contents (ToC) block. Once a malicious payload is stored, it gets executed every time a visitor loads the affected page — putting both site administrators and end users at risk.
CVE-2025-1627- Qi Blocks < 1.4 – Contributor+ Stored XSS via ToC Block – POC
