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CVE-2026-4004

6.5 · MEDIUM

The Task Manager plugin for WordPress is vulnerable to arbitrary shortcode execution via the 'search' AJAX action in all versions up to, and including, 3.0.2.

Published Mar 21, 2026CWE-94EPSS 0.45%

Overview

CVE-2026-4004 is a medium-severity vulnerability. It was published on March 21, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The Task Manager plugin for WordPress is vulnerable to arbitrary shortcode execution via the 'search' AJAX action in all versions up to, and including, 3.0.2. This is due to missing capability checks in the callback_search() function and insufficient input validation that allows shortcode syntax (square brackets) to pass through sanitize_text_field() and be concatenated into a do_shortcode() call. This makes it possible for authenticated attackers, with Subscriber-level access and above, to execute arbitrary shortcodes on the site by injecting shortcode syntax into parameters like 'task_id', 'point_id', 'categories_id', or 'term'.

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/task-manager/tags/3.0.2/module/navigation/action/navigation.action.php#L29Refplugins.trac.wordpress.org/browser/task-manager/tags/3.0.2/module/navigation/action/navigation.action.php#L46Refplugins.trac.wordpress.org/browser/task-manager/tags/3.0.2/module/navigation/action/navigation.action.php#L75Refplugins.trac.wordpress.org/browser/task-manager/trunk/module/navigation/action/navigation.action.php#L29Refplugins.trac.wordpress.org/browser/task-manager/trunk/module/navigation/action/navigation.action.php#L46Refplugins.trac.wordpress.org/browser/task-manager/trunk/module/navigation/action/navigation.action.php#L75Refwww.wordfence.com/threat-intel/vulnerabilities/id/e3a902a6-c16f-4e0a-a13a-defb93754c92?source=cve

How CyberStrike helps

Frequently asked questions

What is CVE-2026-4004?

CVE-2026-4004 is a medium-severity vulnerability. It was published on March 21, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-4004?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-4004?

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-2026-4004?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-4004 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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