CVE-2026-15649
Received Received - Intake

Stored XSS in Powerkit WordPress Plugin via Shortcode Attributes

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 Shortcode Attributes 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-2026-15649
EUVD
EUVD-2026-51764

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 via shortcode attributes. The plugin fails to properly sanitize input and escape output, enabling these scripts to be stored and later executed when users access affected pages.

Detection Guidance

This vulnerability can be detected by reviewing WordPress sites using the Powerkit plugin versions up to 3.1.0. Check for suspicious shortcode attributes in posts or pages that may contain injected scripts. Use WordPress admin tools to inspect plugin versions and scan for unauthorized script tags in content.

Impact Analysis

If exploited, this vulnerability could allow attackers to steal user sessions, deface websites, or redirect visitors to malicious sites. Users with contributor-level access or above could compromise the site, affecting all visitors who view the injected pages.

Compliance Impact

This vulnerability could lead to data breaches, exposing user data and violating privacy regulations like GDPR or HIPAA. Non-compliance may result in legal penalties, reputational damage, and loss of trust due to unauthorized access to sensitive information.

Mitigation Strategies

Immediately update the Powerkit plugin to the latest version beyond 3.1.0. Remove or restrict contributor-level access to untrusted users. Review all posts and pages for injected scripts and sanitize any suspicious content. Monitor for unusual activity or unauthorized changes.

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