CVE-2025-12850 is a SQL Injection vulnerability identified in the My auctions allegro plugin for WordPress, specifically 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 used in SQL queries without adequate escaping or prepared statements. This allows unauthenticated attackers to append arbitrary SQL commands to existing queries, potentially extracting sensitive data from the backend database. The vulnerability does not require any authentication or user interaction, increasing its risk profile. The CVSS v3.1 score of 7.5 reflects its high impact on confidentiality, with no impact on integrity or availability. Although no known exploits have been reported in the wild, the simplicity of exploitation and the widespread use of WordPress and its plugins make this a critical issue to address. The lack of a patch at the time of disclosure necessitates immediate mitigation efforts by administrators. The vulnerability is categorized under CWE-89, which covers improper neutralization of special elements used in SQL commands, a common and dangerous injection flaw. Attackers exploiting this vulnerability could retrieve sensitive information such as user data, credentials, or auction details, potentially leading to further compromise or data breaches.

For European organizations, the impact of this vulnerability could be significant, particularly for those operating e-commerce platforms or auction sites using the My auctions allegro plugin on WordPress. Successful exploitation could lead to unauthorized disclosure of sensitive customer data, financial information, or internal business data, undermining confidentiality and trust. This could result in regulatory penalties under GDPR due to data breaches, reputational damage, and financial losses. The vulnerability's unauthenticated nature means attackers can exploit it remotely without prior access, increasing the attack surface. Additionally, extracted data could be used for further attacks such as phishing or identity theft. The lack of impact on integrity and availability limits the scope to data confidentiality, but the sensitivity of auction and user data makes this a critical concern. European organizations with limited security monitoring or outdated plugin versions are particularly vulnerable. The threat also poses risks to third-party service providers and agencies managing WordPress sites for European clients.

Immediate mitigation should focus on applying any available patches from the plugin vendor once released. Until a patch is available, organizations should implement strict input validation and sanitization on the 'auction_id' parameter at the web application level, ensuring only expected numeric or alphanumeric values are accepted. Deploying a Web Application Firewall (WAF) with custom rules to detect and block SQL injection payloads targeting this parameter can provide temporary protection. Regularly audit WordPress plugins and remove or disable unused or vulnerable plugins. Conduct thorough security assessments and penetration testing focused on injection flaws. Monitor logs for suspicious query patterns or repeated access attempts to the vulnerable parameter. Educate developers and administrators on secure coding practices, emphasizing the use of prepared statements and parameterized queries. Maintain up-to-date backups to enable recovery in case of data compromise. Finally, consider isolating critical databases and limiting database user privileges to minimize data exposure if exploited.