CVE-2026-15730
Received Received - Intake

Stored XSS in GamiPress WordPress Plugin

Publication date: 2026-07-28

Last updated on: 2026-07-28

Assigner: Wordfence

Description
The GamiPress – Gamification plugin to reward points, achievements, badges & ranks in WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'heading_size' Shortcode Attribute in all versions up to, and including, 7.9.9.1 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. The wp_kses_post filter applied at post save does not neutralize this payload because only the inert shortcode text is stored in post_content; the dangerous HTML is synthesized at render time by the shortcode handler, entirely bypassing save-time sanitization.

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Meta Information

Published
2026-07-28
Last Modified
2026-07-28
Generated
2026-07-28
AI Q&A
2026-07-28
EPSS Evaluated
N/A
NVD
CVE-2026-15730
EUVD
EUVD-2026-49713

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
gamipress gamification_plugin to 7.9.9.1 (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) flaw in the GamiPress plugin for WordPress. It allows authenticated attackers with contributor-level access or higher to inject malicious scripts via the 'heading_size' shortcode attribute. The issue occurs because input is not properly sanitized and output is not escaped, letting attackers store harmful scripts in pages. These scripts execute when users access the infected pages.

Detection Guidance

I don't know

Check WordPress plugins for GamiPress version 7.9.9.1 or lower. Inspect shortcode usage for 'heading_size' attribute in posts or pages.

Impact Analysis

If you use the GamiPress plugin, attackers could steal your cookies, session tokens, or sensitive data. They might also perform actions on your behalf, redirect you to malicious sites, or deface your WordPress site. Users with contributor access or above could exploit this to compromise your site.

Compliance Impact

This vulnerability could lead to data breaches, violating GDPR and HIPAA requirements for protecting user data. If exploited, it may result in unauthorized access to personal or health information, leading to legal penalties, fines, or reputational damage for organizations handling such data.

Mitigation Strategies
  • Update the GamiPress plugin to the latest version immediately.
  • Review and remove any suspicious shortcodes containing 'heading_size' attribute from posts or pages.
  • Restrict contributor-level and above user roles to prevent unauthorized shortcode modifications.

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