CVE-2022-1768

The RSVPMaker plugin for WordPress exhibits a critical vulnerability characterized by unauthenticated SQL Injection, primarily due to inadequate escaping and parameterization of user-supplied data. This flaw is present in the ~/rsvpmaker-email.php file and affects versions up to and including 9.3.2. The lack of proper input validation allows attackers to manipulate SQL queries executed by the application, potentially leading to unauthorized access to the underlying database. By injecting malicious SQL code, an attacker can retrieve sensitive information, including user credentials, personal data, and other confidential records stored within the database. This vulnerability underscores the importance of robust coding practices, particularly in web applications that handle user input.

Exploitation of this vulnerability can occur through various attack vectors, primarily targeting the application's web interface. An attacker, without the need for authentication, can craft specially formatted requests that exploit the SQL injection flaw. For instance, by submitting crafted input through forms or URL parameters, an attacker could execute arbitrary SQL commands. This could lead to data exfiltration, where sensitive information is extracted from the database. In more severe scenarios, attackers may also modify or delete records, leading to data integrity issues. The ease of exploitation, combined with the lack of authentication requirements, makes this vulnerability particularly dangerous, as it lowers the barrier for potential attackers.

The real-world impact of this vulnerability can be significant, especially for organizations relying on the RSVPMaker plugin for event management and communication. The risk extends beyond mere data theft; unauthorized access to sensitive information can lead to reputational damage, loss of customer trust, and potential legal ramifications due to data protection regulations. Businesses may face financial losses from remediation efforts, potential fines, and the costs associated with public relations campaigns to mitigate reputational damage. Furthermore, if attackers leverage the stolen data for phishing campaigns or identity theft, the consequences could extend to affected users, compounding the overall impact on the organization.

To detect and mitigate the risks associated with this vulnerability, organizations should implement a multi-faceted approach. Regularly updating the RSVPMaker plugin to the latest version is crucial, as updates often include patches for known vulnerabilities. Employing web application firewalls (WAFs) can help filter out malicious requests and provide an additional layer of security against SQL injection attacks. Additionally, conducting regular security audits and penetration testing can identify potential vulnerabilities before they are exploited. Educating developers on secure coding practices, particularly regarding input validation and parameterized queries, is essential to prevent similar vulnerabilities in the future. Organizations should also monitor their databases for unusual activity, which could indicate an ongoing attack or data breach.

In conclusion, the SQL Injection vulnerability in the RSVPMaker plugin poses a significant threat to organizations utilizing this WordPress extension. The potential for unauthorized data access and manipulation highlights the need for stringent security measures and proactive management of web applications. By adopting best practices in security, organizations can mitigate the risks associated with this vulnerability and protect their sensitive data from malicious actors.

CSURFACE threat intelligence has detected a marked escalation in activity related to CVE-2022-1768, with telemetry indicating a significant increase in exploitation attempts targeting the RSVPMaker WordPress plugin. This surge coincides with an updated CVSS score reflecting a critical severity level, underscoring the heightened risk posed by this unauthenticated SQL injection vulnerability. Although no new exploit variants have been publicly disclosed, the stable yet elevated EPSS score suggests persistent attacker interest and a sustained likelihood of exploitation in the near term. For defenders, this development signals an urgent need to reassess exposure and monitoring strategies, as the amplified detection trend indicates that threat actors are actively probing for vulnerable instances. Consequently, the threat level associated with CVE-2022-1768 has escalated to critical, reflecting both increased adversary activity and the potential for significant data compromise in affected environments.

Update 2 — June 23, 2026

CSURFACE threat intelligence has identified a modest uptick in detection activity related to CVE-2022-1768, indicating continued adversary interest despite a pronounced decline in the EPSS score. While the overall likelihood of exploitation appears to be decreasing based on probabilistic modeling, our telemetry reveals that threat actors persist in probing for vulnerable RSVPMaker instances. This divergence between detection trends and EPSS scoring suggests that attackers may be conducting low-volume or targeted reconnaissance rather than widespread exploitation campaigns at this time. The sustained presence of unauthenticated SQL injection attempts underscores the ongoing risk of sensitive data exposure in affected environments. Consequently, the threat level remains elevated, warranting sustained vigilance as attackers maintain a foothold for potential opportunistic exploitation.