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CVE-2026-1640— Taskbuilder <= 5.0.2 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Project/Task Comment Creation

Quick assessment

Affected
taskbuilder Taskbuilder – Project Management & Task Management Tool With Kanban Board
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Taskbuilder – WordPress Project Management & Task Management 5.0.2及之前版本存在安全漏洞，该漏洞源于缺少授权检查，可能导致授权绕过和任意HTML及CS

CVSS 4.3 · Medium EPSS 0.27% · P17
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I. Basic Information for CVE-2026-1640

Vulnerability Information
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Vulnerability Title
Taskbuilder <= 5.0.2 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Project/Task Comment Creation
Source: CVE Program / CVE List V5
Vulnerability Description
The Taskbuilder – WordPress Project Management & Task Management plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 5.0.2. This is due to missing authorization checks on the project and task comment submission functions (AJAX actions: wppm_submit_proj_comment and wppm_submit_task_comment). This makes it possible for authenticated attackers, with subscriber-level access and above, to create comments on any project or task (including private projects they cannot view or are not assigned to), and inject arbitrary HTML and CSS via the insufficiently sanitized comment_body parameter.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin Taskbuilder – WordPress Project Management & Task Management 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Taskbuilder – WordPress Project Management & Task Management 5.0.2及之前版本存在安全漏洞，该漏洞源于缺少授权检查，可能导致授权绕过和任意HTML及CS
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
taskbuilder Taskbuilder – WordPress Project Management & Task Management,kanban view * ~ 5.0.2 -

II. Public POCs for CVE-2026-1640

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III. Intelligence Information for CVE-2026-1640

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IV. Related Vulnerabilities

Same product: Taskbuilder – Project Management & Task Management Tool With Kanban Board
Same vendor: taskbuilder
Same weakness: CWE-862

V. Comments for CVE-2026-1640

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