CVE-2024-11754 is a stored Cross-Site Scripting (XSS) vulnerability identified in the Booking System Trafft plugin for WordPress, affecting all versions up to and including 1.0.6. The root cause is insufficient input sanitization and output escaping of user-supplied attributes in the plugin's 'trafftbooking' shortcode. This flaw allows authenticated attackers with contributor-level permissions or higher to inject arbitrary JavaScript code into pages generated by the plugin. When other users access these pages, the injected scripts execute in their browsers, potentially leading to session hijacking, theft of sensitive information, or unauthorized actions performed on behalf of the victim user. The vulnerability is classified under CWE-79 (Improper Neutralization of Input During Web Page Generation), a common web application security weakness. The CVSS v3.1 base score is 6.4, reflecting a medium severity level, with an attack vector of network (remote exploitation), low attack complexity, privileges required at the contributor level, no user interaction needed, and a scope change indicating that the vulnerability affects components beyond the initially vulnerable code. The impact primarily affects confidentiality and integrity, with no direct impact on availability. No public exploits have been reported so far, but the vulnerability's presence in a popular WordPress plugin makes it a target for attackers seeking to leverage stored XSS for broader attacks such as phishing, malware distribution, or privilege escalation within WordPress sites. The lack of a patch link suggests that users should monitor vendor communications for updates or apply manual mitigations.

The potential impact of CVE-2024-11754 on organizations worldwide includes unauthorized script execution within the context of affected WordPress sites, leading to compromised user sessions, theft of sensitive data such as cookies or authentication tokens, and possible unauthorized actions performed by attackers impersonating legitimate users. Since the vulnerability requires contributor-level access, attackers must first compromise or have legitimate access to user accounts with these privileges, which may be easier in environments with weak access controls or phishing susceptibility. Exploitation could facilitate lateral movement within an organization's web infrastructure or enable attackers to inject malicious content that harms the organization's reputation and user trust. For organizations relying on the Booking System Trafft plugin for customer bookings, this vulnerability could lead to data breaches involving customer information and disruption of booking services through malicious script injections. The scope of affected systems is limited to WordPress sites using this specific plugin, but given WordPress's global popularity and the plugin's usage in various sectors, the overall risk is significant. The absence of known exploits in the wild reduces immediate risk but does not eliminate the threat, especially as attackers often develop exploits rapidly after public disclosure.

Organizations should immediately audit their WordPress installations to identify the presence of the Booking System Trafft plugin, particularly versions up to 1.0.6. Since no official patch is currently linked, administrators should monitor the vendor's official channels for security updates and apply patches as soon as they become available. In the interim, restrict contributor-level access to trusted users only and review user permissions to minimize the risk of malicious script injection. Implement Web Application Firewall (WAF) rules to detect and block suspicious input patterns related to the 'trafftbooking' shortcode attributes. Employ Content Security Policy (CSP) headers to limit the execution of unauthorized scripts on affected pages. Regularly scan the website for injected scripts or anomalous content. Educate users with elevated privileges about phishing and social engineering risks to prevent account compromise. Consider disabling or removing the plugin if it is not essential or if a timely patch is unavailable. Finally, maintain regular backups of website data to enable recovery in case of compromise.