CVE-2026-15645
Received Received - Intake

Stored XSS in Powerkit WordPress Plugin via Nav Shortcode

Publication date: 2026-08-01

Last updated on: 2026-08-01

Assigner: Wordfence

Description
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.

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Meta Information

Published
2026-08-01
Last Modified
2026-08-01
Generated
2026-08-01
AI Q&A
2026-08-01
EPSS Evaluated
N/A
NVD
CVE-2026-15645
EUVD
EUVD-2026-51747

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
powerkit supercharge_your_wordpress_site to 3.1.0 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

This vulnerability is a Stored Cross-Site Scripting (XSS) issue in the Powerkit WordPress plugin. It allows authenticated attackers with contributor-level access or higher to inject malicious scripts into web pages via the 'nav' shortcode attribute. The flaw exists due to insufficient input sanitization and output escaping in versions up to and including 3.1.0.

Detection Guidance

To detect this vulnerability, inspect WordPress sites using the Powerkit plugin for versions up to 3.1.0. Check for unauthorized scripts in pages or posts, particularly those using the 'nav' shortcode. Review contributor-level user activity for suspicious edits. Use WordPress security plugins to scan for stored XSS payloads.

Impact Analysis

An attacker could exploit this to inject scripts that run when users visit affected pages. This could lead to theft of user sessions, defacement of pages, or redirection to malicious sites. Users with contributor-level access or above could compromise site integrity and user trust.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, violating GDPR's data protection requirements and HIPAA's security rules for protected health information. Organizations may face fines or penalties for failing to protect user data from such exploits.

Mitigation Strategies

Update the Powerkit plugin to the latest version beyond 3.1.0 to address the insufficient input sanitization and output escaping flaws.

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