CVE-2026-5820
Zypento Blocks <= 1.0.6 - Authenticated (Author+) Stored Cross-Site Scripting via Table of Contents Block
CVSS Score
6.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-79 |
| Vendor | sproutient |
| Product | zypento blocks |
| Published | Apr 22, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
sproutient / Zypento Blocks
0 ≤ 1.06
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/024a6a0f-f819-40e7-9618-71219c27aa64?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/zypento-blocks/tags/1.0.6/assets/js/src/blocks/table-of-contents/view.js#L57 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/zypento-blocks/tags/1.0.6/assets/js/src/blocks/table-of-contents/view.js#L71
Credits
Athiwat Tiprasaharn