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.
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

References
Link Providers
https://plugins.trac.wordpress.org/browser/injection-guard/tags/1.2.8/guard.php#L105 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/injection-guard/tags/1.2.8/guard.php#L153 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/injection-guard/tags/1.2.8/guard.php#L49 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/injection-guard/tags/1.2.8/guard.php#L8 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/injection-guard/tags/1.2.8/guard.php#L94 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/injection-guard/tags/1.2.8/ig_settings.php#L120 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/injection-guard/tags/1.2.8/ig_settings.php#L121 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/injection-guard/tags/1.2.8/ig_settings.php#L124 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/injection-guard/trunk/guard.php#L105 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/injection-guard/trunk/guard.php#L153 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/injection-guard/trunk/guard.php#L49 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/injection-guard/trunk/guard.php#L8 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/injection-guard/trunk/guard.php#L94 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/injection-guard/trunk/ig_settings.php#L120 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/injection-guard/trunk/ig_settings.php#L121 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/injection-guard/trunk/ig_settings.php#L124 cve-icon cve-icon
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3482741%40injection-guard&new=3482741%40injection-guard&sfp_email=&sfph_mail= cve-icon cve-icon
https://www.wordfence.com/threat-intel/vulnerabilities/id/15d9817c-910d-4ce1-a5fb-67a2b6580e16?source=cve cve-icon cve-icon
History

Mon, 23 Mar 2026 10:00:00 +0000

Type Values Removed Values Added
First Time appeared Fahadmahmood
Fahadmahmood injection Guard
Wordpress
Wordpress wordpress
Vendors & Products Fahadmahmood
Fahadmahmood injection Guard
Wordpress
Wordpress wordpress

Sat, 21 Mar 2026 05:30:00 +0000

Type Values Removed Values Added
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.
Title Injection Guard <= 1.2.9 - Unauthenticated Stored Cross-Site Scripting via Query Parameter Name
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-03-24T15:29:00.488Z

Reserved: 2026-02-27T21:15:02.411Z

Link: CVE-2026-3368

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-03-21T00:16:28.007

Modified: 2026-03-23T14:32:02.800

Link: CVE-2026-3368

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-03-23T09:51:42Z

Weaknesses