PT-2026-26718 · Fahad Mahmood · Injection Guard

Itthidej Aramsri

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Published

2026-03-20

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Updated

2026-03-21

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CVE-2026-3368

CVSS v3.1

7.2

High

AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
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.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-3368

Affected Products

Injection Guard