CVE-2026-15730 GamiPress <= 7.9.9.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'heading_size' Shortcode Attribute
Authenticated contributors can inject arbitrary scripts via the heading_size shortcode attribute, leading to stored XSS execution for other users.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-15730?
CVE-2026-15730 is a medium-severity cross-site scripting vulnerability in rubengc GamiPress – Gamification plugin to reward points, achievements, badges & ranks in WordPress, published on 28 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2026-15730?
How do I fix CVE-2026-15730?
No fix has been published for CVE-2026-15730 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-15730 being exploited?
There is no known exploitation of CVE-2026-15730 in the wild and no public exploit code.
Sources
Also known as GHSA-7p7j-cq8p-mmhq.