CVE-2026-4004
Task Manager <= 3.0.2 - Authenticated (Subscriber+) Arbitrary Shortcode Execution via 'task_id' Parameter
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'.
INFO
Published Date :
March 21, 2026, 4:17 a.m.
Last Modified :
March 21, 2026, 4:17 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-4004
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the Task Manager plugin to the latest version.
- Verify that capability checks are properly implemented.
- Ensure that all user input is strictly validated.
- Remove any shortcode syntax from user input.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-4004.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-4004 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-4004
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-4004 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-4004 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
Mar. 21, 2026
Action Type Old Value New Value Added 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'. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Added CWE CWE-94 Added Reference https://plugins.trac.wordpress.org/browser/task-manager/tags/3.0.2/module/navigation/action/navigation.action.php#L29 Added Reference https://plugins.trac.wordpress.org/browser/task-manager/tags/3.0.2/module/navigation/action/navigation.action.php#L46 Added Reference https://plugins.trac.wordpress.org/browser/task-manager/tags/3.0.2/module/navigation/action/navigation.action.php#L75 Added Reference https://plugins.trac.wordpress.org/browser/task-manager/trunk/module/navigation/action/navigation.action.php#L29 Added Reference https://plugins.trac.wordpress.org/browser/task-manager/trunk/module/navigation/action/navigation.action.php#L46 Added Reference https://plugins.trac.wordpress.org/browser/task-manager/trunk/module/navigation/action/navigation.action.php#L75 Added Reference https://www.wordfence.com/threat-intel/vulnerabilities/id/e3a902a6-c16f-4e0a-a13a-defb93754c92?source=cve