CVE-2025-39510 Overview
CVE-2025-39510 is a SQL Injection vulnerability in the ValvePress Pinterest Automatic Pin plugin (wp-pinterest-automatic) for WordPress. The flaw affects all versions up to and including 4.19.0. The plugin fails to properly neutralize special elements in user-supplied input before incorporating them into SQL queries [CWE-89]. An authenticated attacker with low privileges can inject arbitrary SQL statements through the network. Successful exploitation impacts confidentiality of the WordPress database and can disrupt site availability.
Critical Impact
Authenticated attackers can extract sensitive data from the WordPress database, including user credentials and session tokens, by injecting crafted SQL payloads through vulnerable plugin parameters.
Affected Products
- ValvePress Pinterest Automatic Pin plugin (wp-pinterest-automatic)
- All versions from initial release through 4.19.0
- WordPress sites with the plugin installed and activated
Discovery Timeline
- 2025-08-14 - CVE-2025-39510 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-39510
Vulnerability Analysis
The vulnerability falls under [CWE-89] Improper Neutralization of Special Elements used in an SQL Command. The Pinterest Automatic Pin plugin constructs SQL queries using attacker-controlled input without adequate sanitization or parameterized statements. An attacker with at least Subscriber-level access on the WordPress site can submit crafted input that breaks out of the intended query context.
The attack scope is changed, meaning the injection can affect resources beyond the vulnerable component itself. This typically indicates the SQL context interacts with the broader WordPress database, exposing tables such as wp_users and wp_usermeta. The EPSS score of 0.254% reflects current exploitation likelihood, though publicly exposed WordPress sites running vulnerable plugins remain attractive targets for automated scanners.
Root Cause
The plugin concatenates user-supplied parameters directly into SQL statements rather than using the WordPress $wpdb->prepare() API. Input from HTTP request parameters reaches database query functions without escaping through esc_sql() or type casting. This allows quote characters, comment sequences, and UNION clauses to alter query logic.
Attack Vector
Exploitation requires network access to the WordPress instance and authenticated session with low privileges. The attacker submits HTTP requests containing SQL metacharacters to plugin endpoints that handle Pinterest pin automation tasks. The injected payload executes within the database server context, returning query results through responses or inducing time-based side channels.
No verified proof-of-concept code is publicly available for this issue. Refer to the Patchstack Plugin Vulnerability Report for additional technical details.
Detection Methods for CVE-2025-39510
Indicators of Compromise
- HTTP requests to wp-admin/admin-ajax.php or plugin-specific endpoints containing SQL metacharacters such as ', UNION SELECT, SLEEP(, or --
- Unusual outbound database queries originating from wp-pinterest-automatic plugin code paths
- Unexpected access patterns to wp_users, wp_options, or wp_usermeta tables from low-privilege user sessions
- Anomalous query response times suggesting time-based blind SQL injection probing
Detection Strategies
- Deploy Web Application Firewall (WAF) rules that inspect query parameters for SQL injection signatures targeting WordPress plugin endpoints
- Enable MySQL/MariaDB general query logging temporarily on suspect hosts and review queries originating from PHP processes serving the plugin
- Audit WordPress access logs for authenticated low-privilege users making repeated requests to plugin actions with encoded payloads
Monitoring Recommendations
- Forward WordPress and database logs to a centralized analytics platform for correlation across authentication, plugin, and SQL events
- Alert on Subscriber or Contributor accounts executing actions that touch plugin AJAX handlers outside normal usage patterns
- Track plugin version inventory across managed WordPress fleets to identify hosts still running wp-pinterest-automatic at or below version 4.19.0
How to Mitigate CVE-2025-39510
Immediate Actions Required
- Update the Pinterest Automatic Pin plugin to a version released after 4.19.0 as soon as the vendor publishes a fix
- Disable and remove the plugin if it is not actively used on the WordPress site
- Review WordPress user accounts and rotate credentials for accounts that may have been exposed
- Audit recent database activity for signs of data exfiltration or unauthorized administrative changes
Patch Information
The vulnerability affects all versions up to and including 4.19.0. Site administrators should monitor the WordPress plugin repository and the Patchstack advisory for a patched release and apply it immediately upon availability.
Workarounds
- Restrict access to WordPress admin and AJAX endpoints using IP allowlisting at the web server or WAF layer
- Apply WAF virtual patching rules that block SQL injection patterns directed at wp-pinterest-automatic request handlers
- Reduce attack surface by removing low-privilege user registration if Subscriber accounts are not required
- Enforce least privilege on the database user configured in wp-config.php, limiting it to the specific WordPress database
# Disable the vulnerable plugin via WP-CLI until a patched version is available
wp plugin deactivate wp-pinterest-automatic
wp plugin delete wp-pinterest-automatic
# Verify plugin status across a multisite network
wp plugin list --status=active | grep pinterest
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
