Medium severity6.4NVD Advisory· Published Apr 22, 2026· Updated Apr 22, 2026
CVE-2026-5820
CVE-2026-5820
Description
The Zypento Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Table of Contents block in all versions up to, and including, 1.0.6. This is due to the front-end TOC rendering script reading heading text via innerText and inserting it into the page using innerHTML without proper sanitization. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
3- plugins.trac.wordpress.org/browser/zypento-blocks/tags/1.0.6/assets/js/src/blocks/table-of-contents/view.jsnvd
- plugins.trac.wordpress.org/browser/zypento-blocks/tags/1.0.6/assets/js/src/blocks/table-of-contents/view.jsnvd
- www.wordfence.com/threat-intel/vulnerabilities/id/024a6a0f-f819-40e7-9618-71219c27aa64nvd
News mentions
1- Wordfence Intelligence Weekly WordPress Vulnerability Report (April 20, 2026 to April 26, 2026)Wordfence Blog · Apr 30, 2026