Stored Cross-Site Scripting Vulnerability in GamiPress Gamification Plugin
CVE-2026-16090

6.4MEDIUM

Key Information:

Vendor

WordPress
Status
Gamipress – Gamification Plugin To Reward Points, Achievements, Badges & Ranks In WordPress
Vendor
CVE Published:
1 August 2026

What is CVE-2026-16090?

The GamiPress gamification plugin for WordPress is susceptible to a Stored Cross-Site Scripting vulnerability due to inadequate input sanitization and output escaping related to the 'heading_size' shortcode attribute in 'gamipress_achievement'. This vulnerability allows authenticated attackers with contributor-level access and higher to inject malicious scripts that execute whenever a user visits the affected page. The wp_kses_post mechanism employed by WordPress fails to neutralize the payload, as the injected content is stored within a shortcode attribute rather than as a raw HTML tag, leading to potential exploitation at render time.

Affected Version(s)

GamiPress – Gamification plugin to reward points, achievements, badges & ranks in WordPress 0 <= 7.9.9.1

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/gamipress/tags...
https://plugins.trac.wordpress.org/browser/gamipress/tags...

CVSS V3.1

Score:
6.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Wordfence PRISM
.