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CVE-2026-8689

4.3 · MEDIUM

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.

Published May 28, 2026CWE-862EPSS 0.40%

Overview

CVE-2026-8689 is a medium-severity vulnerability. It was published on May 28, 2026 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refplugins.trac.wordpress.org/browser/visualizer/tags/3.11.14/classes/Visualizer/Module/Chart.php#L1221Refplugins.trac.wordpress.org/browser/visualizer/tags/3.11.14/classes/Visualizer/Module/Chart.php#L531Refplugins.trac.wordpress.org/browser/visualizer/tags/3.11.14/classes/Visualizer/Module/Chart.php#L56Refplugins.trac.wordpress.org/browser/visualizer/tags/4.0.1/classes/Visualizer/Module/Chart.php#L1221Refplugins.trac.wordpress.org/browser/visualizer/tags/4.0.1/classes/Visualizer/Module/Chart.php#L531Refplugins.trac.wordpress.org/browser/visualizer/tags/4.0.1/classes/Visualizer/Module/Chart.php#L56Refplugins.trac.wordpress.org/changeset/3474710Refwww.wordfence.com/threat-intel/vulnerabilities/id/d18e9696-0f96-4478-9871-a93ac2976c11?source=cve

How CyberStrike helps

Frequently asked questions

What is CVE-2026-8689?

CVE-2026-8689 is a medium-severity vulnerability. It was published on May 28, 2026 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-8689?

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-8689?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-8689?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-8689 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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