---
id: CVE-2026-15645
title: >-
  The Powerkit – Supercharge your WordPress Site plugin for WordPress is
  vulnerable to Stored Cross-Site Scripting via 'nav' Shortcode Attribute in all
  versions up to, and including, 3.1.0 due to insufficient input sanitization
  and output …
summary: >-
  The Powerkit – Supercharge your WordPress Site plugin for WordPress is
  vulnerable to Stored Cross-Site Scripting via 'nav' Shortcode Attribute in all
  versions up to, and including, 3.1.0 due to insufficient input sanitization
  and output …
severity: medium
cvss: 6.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
published: '2026-08-01'
updated: '2026-08-01'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-15645'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/powerkit/tags/3.0.9/modules/basic-elements/public/class-powerkit-basic-elements-public.php#L113
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/powerkit/tags/3.0.9/modules/basic-elements/templates/tabs.php#L133
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/powerkit/tags/3.0.9/modules/basic-elements/templates/tabs.php#L135
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/powerkit/tags/3.1.0/modules/basic-elements/public/class-powerkit-basic-elements-public.php#L113
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/powerkit/tags/3.1.0/modules/basic-elements/templates/tabs.php#L133
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/powerkit/tags/3.1.0/modules/basic-elements/templates/tabs.php#L135
    label: security@wordfence.com
  - url: 'https://plugins.trac.wordpress.org/changeset/3629599/powerkit'
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/5b33aa60-ac20-42c3-a3ab-b29ddfe2284a?source=cve
    label: security@wordfence.com
tags:
  - nvd
epss: 0.00357
epssPercentile: 0.26789
ingestedAt: '2026-08-02T05:17:48.074Z'
---

## Overview

The Powerkit – Supercharge your WordPress Site plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'nav' Shortcode Attribute in all versions up to, and including, 3.1.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.