CVE-2022-1505 is a critical SQL Injection vulnerability affecting the RSVPMaker plugin for WordPress, developed by davidfcarr. The vulnerability arises from improper neutralization of special elements used in SQL commands (CWE-89) within the rsvpmaker-api-endpoints.php file. Specifically, the plugin fails to properly escape or parameterize user-supplied input before incorporating it into SQL queries. This flaw allows unauthenticated attackers to inject malicious SQL code remotely without any user interaction or authentication. Exploitation can lead to unauthorized access to sensitive information stored in the underlying database, including potentially user data, event details, or other confidential content managed by the plugin. The vulnerability affects all versions up to and including 9.2.6. The CVSS v3.1 base score is 9.8, indicating a critical severity level, with attack vector network (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), and impacts on confidentiality, integrity, and availability (C:H/I:H/A:H). Although no public exploits have been reported in the wild, the ease of exploitation and the critical impact make this vulnerability a significant threat to WordPress sites using RSVPMaker. The vulnerability was published on May 10, 2022, and has been enriched by CISA, highlighting its importance. No official patches were linked in the provided data, so users must verify if updates or mitigations have been released by the vendor post-disclosure.

For European organizations, this vulnerability poses a substantial risk, especially for entities relying on WordPress sites with the RSVPMaker plugin for event management or customer engagement. Successful exploitation can lead to large-scale data breaches, exposing personal data protected under GDPR, which can result in severe regulatory penalties and reputational damage. The ability for unauthenticated attackers to access and manipulate database contents threatens the confidentiality, integrity, and availability of critical business information. This can disrupt operations, erode customer trust, and potentially lead to further attacks leveraging stolen data. Organizations in sectors such as education, government, non-profits, and event management, which commonly use RSVPMaker, are particularly vulnerable. Additionally, the critical severity and network-based attack vector mean that attackers can exploit this vulnerability remotely without any user interaction, increasing the likelihood of widespread exploitation if unmitigated.

European organizations should immediately audit their WordPress installations to identify the presence and version of the RSVPMaker plugin. If the plugin is installed, upgrading to a patched version (if available) is the highest priority. In the absence of an official patch, organizations should consider temporarily disabling or uninstalling the plugin to eliminate the attack surface. Web application firewalls (WAFs) should be configured to detect and block SQL injection attempts targeting the rsvpmaker-api-endpoints.php endpoint. Additionally, implementing strict input validation and sanitization at the application level can reduce risk. Monitoring web server logs for suspicious query patterns and unusual database access can help detect exploitation attempts early. Organizations should also ensure that database user privileges are minimized, restricting the plugin's database account to only necessary permissions to limit potential damage. Regular backups and incident response plans should be updated to prepare for potential data compromise scenarios.