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CVE-2026-3368— Injection Guard <= 1.2.9 - Unauthenticated Stored Cross-Site Scripting via Query Parameter Name

Quick assessment

Affected
fahadmahmood Injection Guard
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和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Injection Guard 1.2.9及之前版本存在跨站脚本漏洞，该漏洞源于sanitize_ig_data函数仅清理数组值而未清理数组键，且ig_settings.php模板中缺少输出转义，可能导致存储型跨站脚

CVSS 7.2 · High EPSS 0.53% · P43

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2026-3368

Vulnerability Information
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Vulnerability Title
Injection Guard <= 1.2.9 - Unauthenticated Stored Cross-Site Scripting via Query Parameter Name
Source: CVE Program / CVE List V5
Vulnerability Description
The Injection Guard plugin for WordPress is vulnerable to Stored Cross-Site Scripting via malicious query parameter names in all versions up to and including 1.2.9. This is due to insufficient input sanitization in the sanitize_ig_data() function which only sanitizes array values but not array keys, combined with missing output escaping in the ig_settings.php template where stored parameter keys are echoed directly into HTML. When a request is made to the site, the plugin captures the query string via $_SERVER['QUERY_STRING'], applies esc_url_raw() (which preserves URL-encoded special characters like %22, %3E, %3C), then passes it to parse_str() which URL-decodes the string, resulting in decoded HTML/JavaScript in the array keys. These keys are stored via update_option('ig_requests_log') and later rendered without esc_html() or esc_attr() on the admin log page. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in the admin log page that execute whenever an administrator views the Injection Guard log interface.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/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 plugin Injection Guard 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Injection Guard 1.2.9及之前版本存在跨站脚本漏洞，该漏洞源于sanitize_ig_data函数仅清理数组值而未清理数组键，且ig_settings.php模板中缺少输出转义，可能导致存储型跨站脚
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
fahadmahmood Injection Guard * ~ 1.2.9 -

II. Public POCs for CVE-2026-3368

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III. Intelligence Information for CVE-2026-3368

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Patches & Fixes for CVE-2026-3368 (17)

Vendor Advisories for CVE-2026-3368 (1)

Same Patch Batch · fahadmahmood · 2026-03-20 · 3 CVEs total

CVE-2026-3577 4.4 MEDIUM Keep Backup Daily <= 2.1.2 - Authenticated (Admin+) Stored Cross-Site Scripting via Backup
CVE-2026-3339 2.7 LOW Keep Backup Daily <= 2.1.1 - Authenticated (Admin+) Limited Path Traversal via 'kbd_path'

IV. Related Vulnerabilities

Same product: Injection Guard
Same vendor: fahadmahmood
Same weakness: CWE-79

V. Comments for CVE-2026-3368

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