themeisle Visualizer Plugin up to 3.11.14 on WordPress AJAX Action renderChartPages action authorization

Summaryinfo

A vulnerability was found in themeisle Visualizer Plugin up to 3.11.14 on WordPress. It has been declared as critical. The impacted element is the function renderChartPages of the component AJAX Action Handler. Executing a manipulation of the argument action can lead to authorization. This vulnerability is handled as CVE-2026-8689. The attack can be executed remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in themeisle Visualizer Plugin up to 3.11.14 on WordPress and classified as critical. This vulnerability affects the function renderChartPages of the component AJAX Action Handler. The manipulation of the argument action with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The Visualizer: Tables and Charts Manager for WordPress plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 3.11.14. This is due to a missing capability check on the renderChartPages() and uploadData() functions, where the wp_ajax_visualizer-create-chart and wp_ajax_visualizer-edit-chart AJAX actions invoke renderChartPages() without any current_user_can() check, and wp_ajax_visualizer-upload-data invokes uploadData() which also lacks a capability check and validates its nonce without an action argument, making it trivially bypassable. This makes it possible for authenticated attackers, with Subscriber-level access and above, to create arbitrary chart posts and access or modify chart data belonging to other users, including administrators.

The weakness was released by David Fernández Morilla. The advisory is shared for download at wordfence.com. This vulnerability was named CVE-2026-8689 since 05/15/2026. The exploitation appears to be easy. The attack can be initiated remotely. There are known technical details, but no exploit is available.

Upgrading to version 3.11.14 eliminates this vulnerability.

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Productinfo

Type

• WordPress Plugin

Vendor

• themeisle

Name

• Visualizer Plugin

Version

• 3.11.0
• 3.11.1
• 3.11.2
• 3.11.3
• 3.11.4
• 3.11.5
• 3.11.6
• 3.11.7
• 3.11.8
• 3.11.9
• 3.11.10
• 3.11.11
• 3.11.12
• 3.11.13
• 3.11.14

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CPE 2.2info

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