The My auctions allegro plugin for WordPress suffers from an SQL Injection vulnerability identified as CVE-2025-12850, classified under CWE-89. The flaw exists in the handling of the 'auction_id' parameter, which is insufficiently escaped and lacks proper query preparation, allowing attackers to append arbitrary SQL commands to existing queries. This vulnerability affects all versions up to and including 3.6.32. Exploitation requires no authentication or user interaction, enabling remote attackers to extract sensitive information from the backend database, potentially including user data, credentials, or other confidential records. The CVSS v3.1 score is 7.5 (high), reflecting the vulnerability's network attack vector, low attack complexity, and high confidentiality impact, with no impact on integrity or availability. Although no public exploits have been reported yet, the vulnerability's characteristics make it a critical concern for WordPress sites using this plugin, especially given WordPress's widespread use and the plugin's role in auction-related data management.

The primary impact of this vulnerability is unauthorized disclosure of sensitive data stored in the WordPress database, which may include user information, auction details, and potentially administrative credentials if stored insecurely. This can lead to privacy violations, identity theft, and further compromise of the affected websites. Since the vulnerability does not affect data integrity or availability, attackers cannot modify or delete data or cause denial of service directly via this flaw. However, the extracted data could be used to facilitate subsequent attacks, such as privilege escalation or lateral movement within the compromised environment. Organizations worldwide using the My auctions allegro plugin are at risk of data breaches, reputational damage, and potential regulatory penalties related to data protection laws.

Immediate mitigation involves updating the My auctions allegro plugin to a version that addresses this vulnerability once released by the vendor. In the absence of an official patch, organizations should implement input validation and sanitization on the 'auction_id' parameter, employing prepared statements or parameterized queries to prevent SQL injection. Web Application Firewalls (WAFs) can be configured to detect and block malicious SQL injection attempts targeting this parameter. Additionally, restricting access to the plugin's endpoints via IP whitelisting or authentication can reduce exposure. Regular security audits and monitoring for unusual database queries or access patterns are recommended to detect exploitation attempts early. Finally, maintaining regular backups and ensuring least privilege database access can limit the damage if a breach occurs.