CVE-2026-59515: AIWU AI Copilot SQL Injection Vulnerability

CVE-2026-59515 Overview

CVE-2026-59515 is a blind SQL injection vulnerability in the Sergey AIWU ai-copilot-content-generator WordPress plugin. The flaw affects all versions up to and including 1.5.4. Attackers can inject malicious SQL statements through unsanitized input parameters without authentication or user interaction. The vulnerability is classified under CWE-89, covering improper neutralization of special elements in SQL commands.

Critical Impact

Unauthenticated remote attackers can execute arbitrary SQL queries against the WordPress database, potentially exposing sensitive data across the entire site scope.

Affected Products

• Sergey AIWU ai-copilot-content-generator plugin for WordPress
• All versions from initial release through 1.5.4
• WordPress installations with the AIWU plugin activated

Discovery Timeline

• 2026-07-13 - CVE-2026-59515 published to NVD
• 2026-07-13 - Last updated in NVD database

Technical Details for CVE-2026-59515

Vulnerability Analysis

The vulnerability resides in the AIWU plugin's handling of user-supplied input passed to database query functions. The plugin fails to properly sanitize or parameterize input before incorporating it into SQL statements. This allows attackers to modify query logic and extract data through inference-based techniques.

Blind SQL injection differs from classic injection because query results are not directly returned to the attacker. Instead, attackers infer data by observing conditional response differences or time-based delays. The scope-changed classification indicates the vulnerability affects resources beyond the vulnerable component itself.

Root Cause

The root cause is improper neutralization of special SQL characters in user-controlled input [CWE-89]. The plugin concatenates untrusted data directly into SQL queries rather than using prepared statements or WordPress's $wpdb->prepare() API. This design flaw permits attackers to break out of the intended query context and inject arbitrary SQL syntax.

Attack Vector

An unauthenticated remote attacker sends crafted HTTP requests to plugin endpoints that accept vulnerable parameters. The attack requires no privileges and no user interaction. Attackers typically use boolean-based or time-based blind injection payloads to enumerate database schemas, extract WordPress user credentials, and access API keys or session tokens stored in the wp_options and wp_users tables.

The vulnerability mechanism is described in the Patchstack SQL Injection Vulnerability advisory. No public proof-of-concept exploit code has been verified at this time.

Detection Methods for CVE-2026-59515

Indicators of Compromise

• HTTP requests to AIWU plugin endpoints containing SQL keywords such as UNION, SELECT, SLEEP, BENCHMARK, or WAITFOR DELAY
• Unusually long response times from plugin request handlers, indicating time-based blind injection attempts
• Web server access logs showing repeated requests with incremental payload variations against the same endpoint
• Unexpected database queries containing conditional expressions in MySQL slow query logs

Detection Strategies

• Deploy a web application firewall (WAF) with signatures for common SQL injection payloads targeting WordPress plugin routes
• Enable WordPress query logging and review executed statements originating from the AIWU plugin
• Monitor for anomalous outbound queries against wp_users, wp_usermeta, and wp_options tables

Monitoring Recommendations

• Correlate WAF alerts with backend application logs to identify successful injection attempts
• Track EPSS score changes and Patchstack advisory updates for exploitation trend shifts
• Establish baselines for normal AIWU plugin request patterns to identify deviation quickly

How to Mitigate CVE-2026-59515

Immediate Actions Required

• Deactivate and remove the AIWU ai-copilot-content-generator plugin until a patched version is confirmed available
• Audit WordPress user accounts and rotate administrator credentials if the plugin has been publicly exposed
• Review database access logs for evidence of unauthorized queries against sensitive tables

Patch Information

No patched version beyond 1.5.4 has been referenced in the available advisory data. Monitor the Patchstack advisory and the vendor's WordPress.org plugin page for updated releases. Apply patches immediately upon publication.

Workarounds

• Restrict access to /wp-content/plugins/ai-copilot-content-generator/ endpoints at the reverse proxy or WAF layer
• Implement virtual patching rules blocking SQL metacharacters in plugin request parameters
• Enforce least-privilege database credentials for the WordPress database user to limit blast radius

# Example nginx rule to block requests containing SQL injection patterns
# targeting the vulnerable plugin path
location ~* /wp-content/plugins/ai-copilot-content-generator/ {
    if ($args ~* "(union.*select|sleep\(|benchmark\(|information_schema)") {
        return 403;
    }
}