CVE-2024-50491

The vulnerability in the RSVP ME plugin for WordPress is characterized by improper neutralization of special elements used in SQL commands, commonly known as SQL Injection. This flaw arises when user input is not adequately sanitized before being incorporated into SQL queries. Attackers can exploit this weakness by crafting malicious input that alters the intended SQL command, allowing them to execute arbitrary SQL code on the database. The affected versions of RSVP ME, specifically those up to and including 1.9.9, are particularly susceptible due to this lack of proper input validation. This vulnerability enables attackers to manipulate database queries, potentially leading to unauthorized data access, data modification, or even complete database compromise.

Exploitation of this SQL Injection vulnerability can occur through various attack vectors. An attacker could submit specially crafted input through web forms, URL parameters, or API requests that the RSVP ME plugin processes. For instance, if a user submits a registration or RSVP form, the attacker could inject SQL commands into the input fields. If the application fails to sanitize this input, the malicious SQL code could be executed on the backend database. This could lead to scenarios where sensitive information, such as user credentials, personal data, or payment information, is exposed. Furthermore, attackers could escalate their privileges, delete data, or even gain control over the entire database server, depending on the permissions associated with the database user account utilized by the application.

The real-world impact of this vulnerability is significant, particularly for organizations that rely on the RSVP ME plugin for event management and user engagement. A successful exploitation could result in data breaches, leading to the exposure of sensitive customer information and potentially causing reputational damage. Additionally, organizations may face regulatory repercussions if they fail to protect user data adequately, particularly under frameworks such as GDPR or CCPA. The financial implications can be severe, encompassing costs related to incident response, legal fees, and potential fines. Moreover, the loss of customer trust can have long-lasting effects on business operations, customer retention, and overall brand reputation.

To detect and mitigate this SQL Injection vulnerability, organizations should implement a multi-layered security approach. Regular security assessments, including code reviews and penetration testing, can help identify vulnerabilities before they are exploited. Employing web application firewalls (WAFs) can provide an additional layer of defense by filtering and monitoring HTTP requests for malicious payloads. Additionally, developers should adopt secure coding practices, such as using prepared statements and parameterized queries, which significantly reduce the risk of SQL injection by ensuring that user input is treated as data rather than executable code. Regular updates and patch management are also crucial, as they ensure that any known vulnerabilities are addressed promptly.

In conclusion, the SQL Injection vulnerability in the RSVP ME plugin poses a critical risk to organizations utilizing this software. The potential for unauthorized access to sensitive data and the subsequent impact on business operations underscores the importance of implementing robust security measures. By prioritizing secure coding practices, regular vulnerability assessments, and proactive monitoring, organizations can significantly mitigate the risks associated with this vulnerability and protect their assets from malicious actors.

CSURFACE threat intelligence has identified a significant development in the exploitation landscape of CVE-2024-50491. A new public proof-of-concept exploit has emerged on GitHub, marking the first known instance of publicly available exploit code targeting the RSVP ME plugin’s SQL injection vulnerability. This emergence correlates with a marked increase in the EPSS score to 0.3774, placing the vulnerability in the upper percentile for likely exploitation. The availability of exploit code substantially lowers the barrier for threat actors to weaponize this vulnerability, increasing the risk of widespread attacks. Our telemetry indicates a notable expansion in exploitation tools, suggesting that adversaries are actively incorporating this vulnerability into their attack frameworks. Consequently, the threat level has escalated from theoretical to imminent, elevating the urgency for defenders to recognize this vulnerability as a critical and actively exploited risk. This shift underscores the necessity for heightened vigilance in monitoring and detection efforts surrounding RSVP ME deployments.

Update 2 — June 09, 2026

CSURFACE threat intelligence has identified an upward revision in the CVSS score for CVE-2024-50491, reflecting a reassessment of its exploitability and impact severity. This adjustment from 9.3 to 9.8 underscores a heightened criticality, aligning with the emergence of new proof-of-concept exploits that demonstrate more reliable and accessible attack vectors against RSVP ME versions up to 1.9.9. Although the EPSS score remains stable, the vulnerability’s elevated CVSS rating signals increased confidence in its potential for widespread exploitation. Our telemetry further confirms a sustained presence of active exploitation attempts, indicating that threat actors are refining their capabilities to leverage this SQL injection flaw more effectively. This evolution in the threat landscape amplifies the urgency for defenders to prioritize detection and response mechanisms, as the vulnerability now represents an even greater risk of data compromise and system integrity breaches. Consequently, the overall threat level has intensified, transitioning from a high-risk concern to a critical priority within vulnerability management frameworks.