EUVD-2026-51750
GHSA-vqxc-cxjv-jp2h
Severity by source
AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Primary rating from Vendor (Wordfence) · only source for this CVE.
CVSS VectorVendor: Wordfence
Lifecycle Timeline
2DescriptionCVE.org
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 'gamipress_achievement' 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. WordPress save-time wp_kses_post does not neutralize this payload because the injected value is stored inside a shortcode attribute rather than as a raw HTML tag, and is only emitted into HTML at render time without escaping.
AnalysisAI
Stored Cross-Site Scripting in the GamiPress WordPress plugin (all versions through 7.9.9.1) permits contributor-level authenticated users to inject persistent JavaScript payloads via the heading_size attribute of the gamipress_achievement shortcode. The root cause is a WordPress-specific sanitization gap: wp_kses_post strips disallowed HTML at save time but cannot neutralize payloads embedded inside shortcode attribute strings, which are only interpolated into HTML output at render time without escaping — meaning the injected script executes in any visitor's browser who loads the affected page. No public exploit code or CISA KEV listing has been identified at time of analysis, but the stored nature of the payload and the low privilege bar make this a meaningful risk on multi-author WordPress deployments.
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External POC / Exploit Code
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