CVE-2026-3368: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in fahadmahmood Injection Guard
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.
AI Analysis
Technical Summary
CVE-2026-3368 is a stored Cross-Site Scripting vulnerability in the Injection Guard WordPress plugin (up to version 1.2.9). The sanitize_ig_data() function fails to sanitize array keys from query parameters, which are captured from the URL query string, URL-decoded, and stored via update_option('ig_requests_log'). These keys are then output in the admin log page without proper escaping, enabling script injection. The vulnerability allows unauthenticated remote attackers to execute arbitrary JavaScript in the context of the WordPress admin interface when viewing the Injection Guard logs.
Potential Impact
An unauthenticated attacker can inject and store malicious scripts that execute in the administrator's browser when they view the Injection Guard log page. This can lead to session hijacking, privilege escalation, or other attacks limited to the admin context. The CVSS score of 7.2 reflects high severity with network attack vector, no privileges required, no user interaction, and impact on confidentiality and integrity but not availability.
Mitigation Recommendations
No official patch or fix is currently available for this vulnerability. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is released, administrators should avoid viewing the Injection Guard log page or restrict access to trusted users only. Monitoring for plugin updates and applying them promptly when available is recommended.
CVE-2026-3368: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in fahadmahmood Injection Guard
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-3368 is a stored Cross-Site Scripting vulnerability in the Injection Guard WordPress plugin (up to version 1.2.9). The sanitize_ig_data() function fails to sanitize array keys from query parameters, which are captured from the URL query string, URL-decoded, and stored via update_option('ig_requests_log'). These keys are then output in the admin log page without proper escaping, enabling script injection. The vulnerability allows unauthenticated remote attackers to execute arbitrary JavaScript in the context of the WordPress admin interface when viewing the Injection Guard logs.
Potential Impact
An unauthenticated attacker can inject and store malicious scripts that execute in the administrator's browser when they view the Injection Guard log page. This can lead to session hijacking, privilege escalation, or other attacks limited to the admin context. The CVSS score of 7.2 reflects high severity with network attack vector, no privileges required, no user interaction, and impact on confidentiality and integrity but not availability.
Mitigation Recommendations
No official patch or fix is currently available for this vulnerability. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is released, administrators should avoid viewing the Injection Guard log page or restrict access to trusted users only. Monitoring for plugin updates and applying them promptly when available is recommended.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-02-27T21:15:02.411Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69bdda56b462d409683a8bf4
Added to database: 3/20/2026, 11:37:58 PM
Last enriched: 4/9/2026, 10:07:53 PM
Last updated: 5/2/2026, 6:43:09 AM
Views: 41
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