CVE-2026-15730

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.

CVSS Vector

References

• https://plugins.trac.wordpress.org/browser/gamipress/tags/7.9.8/includes/filters.php#L1885
• https://plugins.trac.wordpress.org/browser/gamipress/tags/7.9.8/includes/filters.php#L263
• https://plugins.trac.wordpress.org/browser/gamipress/tags/7.9.8/includes/filters.php#L390
• https://plugins.trac.wordpress.org/browser/gamipress/tags/7.9.8/includes/filters.php#L542
• https://plugins.trac.wordpress.org/browser/gamipress/tags/7.9.8/includes/shortcodes/gamipress_points_types.php#L212
• https://plugins.trac.wordpress.org/changeset?reponame=&old=3619577%40gamipress&new=3619577%40gamipress
• https://www.wordfence.com/threat-intel/vulnerabilities/id/dedd24e6-ac0c-48cd-a76a-8fb61d2c3c0f?source=cve