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CVE-2026-16090— GamiPress <= 7.9.9.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via gamipress_achievement Shortcode

Quick assessment

Affected
rubengc GamiPress – Gamification plugin to reward points, achievements, badges & ranks in WordPress
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress GamiPress是WordPress基金会的一个游戏化插件，用于奖励积分、成就、徽章和等级。 WordPress GamiPress 7.9.9.1及之前版本存在跨站脚本漏洞，该漏洞源于gamipress_achievement短代码中heading_size属性输入清理和输出转义不足，可能导致经过身份验证的攻击者（具有贡献者级别及以上访问权限）注入任意Web脚本，当用户访问被注入页面时执行。

CVSS 6.4 · Medium EPSS 0.33% · P24

Affected Version Matrix 1

VendorProduct Version RangeStatus
rubengc GamiPress – Gamification plugin to reward points, achievements, badges & ranks in WordPress ≤ 7.9.9.1 affected
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I. Basic Information for CVE-2026-16090

Vulnerability Information
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
GamiPress <= 7.9.9.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via gamipress_achievement Shortcode
Source: CVE Program / CVE List V5
Vulnerability 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 '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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress GamiPress 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress GamiPress是WordPress基金会的一个游戏化插件，用于奖励积分、成就、徽章和等级。 WordPress GamiPress 7.9.9.1及之前版本存在跨站脚本漏洞，该漏洞源于gamipress_achievement短代码中heading_size属性输入清理和输出转义不足，可能导致经过身份验证的攻击者（具有贡献者级别及以上访问权限）注入任意Web脚本，当用户访问被注入页面时执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
rubengc GamiPress – Gamification plugin to reward points, achievements, badges & ranks in WordPress 0 ~ 7.9.9.1 -

II. Public POCs for CVE-2026-16090

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III. Intelligence Information for CVE-2026-16090

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Patches & Fixes for CVE-2026-16090 (1)

News Coverage for CVE-2026-16090 (1)

IV. Related Vulnerabilities

Same product: GamiPress – Gamification plugin to reward points, achievements, badges & ranks in WordPress
Same vendor: rubengc
Same weakness: CWE-79

V. Comments for CVE-2026-16090

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