CVE-2025-14719 is a critical SQL Injection vulnerability identified in the Relevanssi WordPress plugin, specifically versions before 4.26.0 and Relevanssi Premium before 2.29.0. The vulnerability stems from improper input validation where a parameter is neither sanitized nor escaped before being used in SQL statements. This flaw enables users with contributor or higher roles to inject malicious SQL code, potentially compromising the underlying database. SQL Injection (CWE-89) is a well-known attack vector that can lead to unauthorized data disclosure, data manipulation, or even full system compromise depending on the database privileges. Since the vulnerability requires authenticated access at the contributor level, it is not exploitable by anonymous users, but it remains a serious threat if an attacker gains such access or if insider threats exist. The absence of a CVSS score indicates this is a newly published vulnerability with no known exploits in the wild yet. However, the technical details confirm the vulnerability's presence and the need for urgent remediation. The Relevanssi plugin is widely used for enhancing WordPress search functionality, making this vulnerability relevant for many websites. The lack of patch links suggests that users must monitor official channels for updates or apply interim mitigations. The vulnerability was reserved in December 2025 and published in January 2026, indicating recent discovery and disclosure.

For European organizations, the impact of this vulnerability can be significant, especially for those relying on WordPress sites with the Relevanssi plugin installed. Successful exploitation could lead to unauthorized access to sensitive data stored in the website's database, including user information, content, and potentially credentials if stored insecurely. Data integrity could be compromised by unauthorized modifications, leading to misinformation or defacement. Availability might also be affected if attackers execute destructive SQL commands. Since contributor-level access is required, the threat is heightened in environments with weak internal controls or where user accounts are compromised. Organizations in sectors such as e-commerce, government, healthcare, and media, which often use WordPress extensively, could face reputational damage, regulatory penalties under GDPR for data breaches, and operational disruptions. The vulnerability could also be leveraged as a foothold for further attacks within the network. Given the widespread use of WordPress across Europe, the potential attack surface is large, necessitating prompt action.

1. Immediate upgrade of the Relevanssi plugin to version 4.26.0 or later, and Relevanssi Premium to 2.29.0 or later once patches are released. 2. Until patches are available, restrict contributor and higher roles to trusted users only and review user permissions to minimize risk. 3. Implement Web Application Firewalls (WAF) with SQL Injection detection rules tailored to WordPress environments to block suspicious queries. 4. Conduct regular database activity monitoring and audit logs for unusual SQL commands or access patterns. 5. Employ principle of least privilege for database accounts used by WordPress to limit the impact of potential injection. 6. Harden WordPress installations by disabling unnecessary plugins and features, and keep all components updated. 7. Educate administrators and content contributors about the risks of privilege misuse and phishing attacks that could lead to account compromise. 8. Consider deploying intrusion detection systems (IDS) that can detect anomalous behavior related to SQL Injection attempts. 9. Backup databases regularly and verify restoration procedures to ensure rapid recovery if exploitation occurs.