CVE-2024-11754 in Booking System Trafft Plugin
Summary
by MITRE • 12/13/2024
The Booking System Trafft plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'trafftbooking' shortcode in all versions up to, and including, 1.0.6 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
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Analysis
by VulDB Data Team • 05/19/2026
The vulnerability identified in the Booking System Trafft plugin for WordPress represents a critical stored cross-site scripting flaw that undermines the security integrity of WordPress installations. This vulnerability exists within the plugin's 'trafftbooking' shortcode functionality and affects all versions up to and including 1.0.6, making it a persistent threat across multiple releases. The flaw stems from inadequate input sanitization and insufficient output escaping mechanisms that fail to properly validate or sanitize user-supplied attributes before processing them within the plugin's shortcode implementation. Security researchers have classified this issue as a stored XSS vulnerability, indicating that malicious scripts can be permanently stored on the server and executed whenever affected pages are accessed by unsuspecting users.
The technical exploitation of this vulnerability requires authenticated access with contributor-level privileges or higher, which significantly reduces the attack surface but does not eliminate the threat entirely. Attackers with such access can craft malicious payloads within the plugin's shortcode attributes, effectively embedding malicious JavaScript code that gets stored in the database and executed in the context of other users' browsers. This stored nature of the vulnerability means that the malicious code persists even after the initial injection, creating a long-term threat vector that can affect multiple users over time. The vulnerability specifically targets the plugin's shortcode processing mechanism, where user-supplied parameters are directly incorporated into the output without proper sanitization or escaping, creating an ideal environment for cross-site scripting attacks.
The operational impact of this vulnerability extends beyond simple script execution, potentially enabling attackers to perform session hijacking, steal sensitive information, manipulate website content, or redirect users to malicious sites. The fact that this affects users with contributor-level access and above means that even relatively low-privilege accounts can pose significant threats to website security, particularly in environments where multiple users have access to the content management system. This vulnerability creates a pathway for attackers to escalate their privileges or compromise other users' sessions, making it particularly dangerous in multi-user WordPress environments. The stored nature of the vulnerability also means that the impact can compound over time as more users access affected pages, potentially leading to widespread compromise of the website's user base.
Organizations affected by this vulnerability should prioritize immediate remediation through plugin updates to versions that address the input sanitization and output escaping deficiencies. The mitigation strategy should include not only updating to the patched version but also implementing additional security measures such as input validation, output encoding, and regular security audits of plugin components. From a compliance perspective, this vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws, and it maps to ATT&CK technique T1566 which covers phishing with malicious attachments or links. Security teams should also consider implementing web application firewalls to detect and block suspicious shortcode parameter inputs, as well as conducting thorough penetration testing to identify any potential exploitation vectors within the WordPress environment. Regular monitoring of plugin security advisories and maintaining an updated inventory of all installed plugins will help prevent similar vulnerabilities from being exploited in the future.