CVE-2025-12850 is a critical SQL Injection vulnerability identified in the My auctions allegro plugin for WordPress, affecting all versions up to and including 3.6.32. The vulnerability stems from improper neutralization of special elements in the 'auction_id' parameter, which is directly used in SQL queries without adequate escaping or prepared statements. This flaw allows unauthenticated attackers to append arbitrary SQL commands to existing queries, enabling them to extract sensitive information from the backend database. The vulnerability does not require any authentication or user interaction, increasing its exploitability. The CVSS v3.1 score of 7.5 reflects a high severity due to network attack vector, low attack complexity, and high confidentiality impact, while integrity and availability remain unaffected. No public exploits have been reported yet, but the vulnerability's nature and ease of exploitation make it a prime target for attackers. The plugin is commonly used in WordPress-based auction or e-commerce sites, which often handle sensitive user and transaction data, increasing the risk of data breaches. The lack of official patches at the time of publication necessitates immediate mitigation efforts by site administrators. The vulnerability is cataloged under CWE-89, emphasizing the failure to properly sanitize SQL inputs. Given WordPress's widespread adoption across Europe, this vulnerability poses a significant risk to organizations relying on this plugin for auction functionalities.

The primary impact of CVE-2025-12850 is the unauthorized disclosure of sensitive information stored in the database, such as user credentials, personal data, transaction records, or other confidential business information. For European organizations, this can lead to violations of GDPR and other data protection regulations, resulting in legal penalties and reputational damage. The vulnerability does not directly affect data integrity or availability but compromises confidentiality, which is critical for trust and compliance. Attackers exploiting this flaw can gain insights into database structure and contents, potentially facilitating further attacks or data exfiltration. E-commerce and auction platforms are particularly vulnerable, as they often process financial transactions and personal customer data. The ease of exploitation without authentication or user interaction increases the likelihood of automated attacks and mass scanning by threat actors. This can lead to widespread data breaches affecting multiple organizations, especially those with outdated plugin versions. The impact is amplified in sectors with high regulatory scrutiny and customer trust requirements, such as finance, retail, and government services within Europe.

1. Immediate upgrade to a patched version of the My auctions allegro plugin once available from the vendor. 2. If no patch is available, implement strict input validation and sanitization on the 'auction_id' parameter, ensuring only expected numeric or alphanumeric values are accepted. 3. Modify the plugin code to use parameterized queries or prepared statements to prevent SQL injection. 4. Employ Web Application Firewalls (WAFs) with rules targeting SQL injection patterns specific to this plugin and parameter. 5. Conduct thorough security audits and penetration testing on WordPress sites using this plugin to detect exploitation attempts. 6. Monitor logs for unusual database query patterns or repeated access attempts to the vulnerable parameter. 7. Educate site administrators on the risks of outdated plugins and enforce regular updates and patch management. 8. Consider isolating the database with strict access controls and limiting privileges of the database user used by the plugin. 9. Backup databases regularly and ensure incident response plans are in place to quickly address potential breaches. 10. For organizations with high risk, consider temporarily disabling the plugin until a secure version is deployed.