CVE-2025-6783: 
WordPress vulnerability analysis and mitigation

CVE-2025-6783 is an unauthenticated SQL Injection vulnerability in the GoZen Forms plugin for WordPress, affecting all versions up to and including 1.1.5. The flaw exists in the emdedSc() function via the forms-id parameter, which lacks sufficient input escaping and SQL query preparation. It was published on July 4, 2025, and assigned a CVSS v3.1 base score of 7.5 (High) (Wordfence, Red Hat CVE).

The vulnerability is classified as CWE-89 (Improper Neutralization of Special Elements used in an SQL Command). The emdedSc() function in the GoZen Forms plugin fails to properly escape the user-supplied forms-id parameter before incorporating it into an SQL query, enabling attackers to append additional SQL statements. Because no authentication is required to trigger this code path, any remote attacker can send a crafted HTTP request to exploit the flaw and perform blind or union-based SQL injection against the WordPress database (Wordfence, ENISA EUVD).

Successful exploitation allows unauthenticated attackers to extract sensitive information from the WordPress database, including user credentials (hashed passwords), email addresses, secret keys, and any data stored by other plugins or WordPress core. The CVSS score reflects a high confidentiality impact with no integrity or availability impact, meaning the primary risk is data exfiltration. Extracted credentials could enable further account takeover or lateral movement within the hosting environment (Wordfence, Red Hat CVE).

1. Reconnaissance: Identify WordPress sites running the GoZen Forms plugin (version ≤ 1.1.5) using tools like WPScan, Shodan, or by checking /wp-content/plugins/gozen-forms/ for plugin presence.
2. Locate the vulnerable endpoint: Identify the WordPress page or shortcode that invokes the emdedSc() function, which renders embedded GoZen forms and processes the forms-id parameter.
3. Craft a malicious request: Send an HTTP GET or POST request to the vulnerable endpoint with a manipulated forms-id parameter containing SQL injection payloads (e.g., 1 UNION SELECT user_login,user_pass,3 FROM wp_users--).
4. Extract database contents: Use time-based blind or UNION-based SQL injection techniques to enumerate database tables and extract sensitive data such as WordPress user credentials, email addresses, and plugin configuration data.
5. Post-exploitation: Use extracted password hashes with offline cracking tools (e.g., Hashcat) to recover plaintext credentials, then attempt login to the WordPress admin panel or other services (Wordfence).

• Network: Unusual HTTP requests to WordPress pages containing GoZen Forms shortcodes with anomalous forms-id parameter values (e.g., containing SQL keywords like UNION, SELECT, FROM, --, or URL-encoded equivalents).
• Logs: WordPress or web server access logs showing repeated requests to form-embedding endpoints with varying or malformed forms-id values; error log entries related to SQL query failures or unexpected database responses.
• Database: Unexpected or unauthorized queries in the MySQL slow query log or general query log involving UNION SELECT statements against WordPress tables (e.g., wp_users, wp_options).

WordPress site administrators should update the GoZen Forms plugin to a version beyond 1.1.5 as soon as a patched release is made available by the vendor (OptinlyHQ). In the interim, disabling or removing the plugin entirely is the most effective workaround to eliminate the attack surface. Web application firewalls (WAFs) with SQL injection rulesets (e.g., Wordfence, Cloudflare WAF) can provide partial mitigation by blocking common SQL injection patterns in request parameters (Wordfence, WordPress Plugin Page).

Wordfence disclosed the vulnerability as part of their weekly WordPress vulnerability report for the period of June 30 – July 6, 2025, and it was subsequently tracked by Qualys in their July 2025 web application detections publication (Wordfence Blog, Qualys). No significant broader media coverage or notable researcher commentary beyond standard vulnerability tracking has been identified.