sproutient Zypento Blocks Plugin up to 1.06 on WordPress cross site scripting

Summaryinfo

A vulnerability classified as problematic has been found in sproutient Zypento Blocks Plugin up to 1.06 on WordPress. Affected is an unknown function. This manipulation causes cross site scripting. The identification of this vulnerability is CVE-2026-5820. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in sproutient Zypento Blocks Plugin up to 1.06 on WordPress. It has been declared as problematic. Affected by this vulnerability is some unknown processing. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

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.

The weakness was shared by Athiwat Tiprasaharn. It is possible to read the advisory at wordfence.com. This vulnerability is known as CVE-2026-5820 since 04/08/2026. The exploitation appears to be easy. The attack can be launched remotely. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• WordPress Plugin

Vendor

• sproutient

Name

• Zypento Blocks Plugin

Version

• 1.06

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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