CVE-2024-38676 in Booking Ultra Pro Plugin
Summary
by MITRE • 07/20/2024
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Booking Ultra Pro allows Stored XSS.This issue affects Booking Ultra Pro: from n/a through 1.1.13.
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Analysis
by VulDB Data Team • 03/17/2025
The vulnerability identified as CVE-2024-38676 represents a critical security flaw in the Booking Ultra Pro plugin that enables stored cross-site scripting attacks through improper input sanitization during web page generation. This weakness falls under the category of CWE-79 - Improper Neutralization of Input During Web Page Generation, which is a fundamental web application security concern that has been consistently documented in industry security frameworks. The vulnerability specifically affects versions of Booking Ultra Pro from an unspecified starting point through version 1.1.13, indicating a potentially long-standing issue that has not been adequately addressed in the plugin's codebase.
The technical nature of this flaw stems from the plugin's failure to properly sanitize or escape user-supplied input before incorporating it into dynamically generated web pages. When malicious actors submit crafted script payloads through input fields or parameters that are subsequently stored in the application's database, these inputs are later retrieved and rendered on web pages without adequate security measures. This stored XSS vulnerability allows attackers to inject malicious JavaScript code that executes in the context of other users' browsers when they view affected pages. The persistence of this attack vector means that once malicious input is stored, it will continue to affect users until the vulnerability is patched or the malicious content is removed from the database.
The operational impact of this vulnerability extends beyond simple data theft or defacement. Attackers can leverage this stored XSS to hijack user sessions, steal sensitive information, perform unauthorized actions on behalf of victims, or redirect users to malicious websites. In the context of a booking plugin, this could compromise user reservation data, personal information, or even financial details if the application handles payment information. The vulnerability creates a persistent threat that can affect multiple users over time, as the stored malicious content remains active until manually removed or until the plugin is updated to address the issue. This makes it particularly dangerous for websites that rely heavily on user-generated content or that have numerous visitors who may be exposed to the malicious scripts.
Security professionals should implement immediate mitigations while planning for the necessary plugin updates to address this vulnerability. The recommended approach includes implementing comprehensive input validation and output encoding mechanisms that ensure all user-supplied data is properly sanitized before being stored or displayed. Organizations should also consider implementing content security policies to limit the execution of unauthorized scripts and monitor for suspicious user activity patterns. According to ATT&CK framework categorization, this vulnerability maps to T1566.001 - Phishing: Spearphishing Attachment, as attackers can use this vulnerability to deliver malicious payloads through compromised booking forms or reservation systems. Additionally, the vulnerability aligns with T1059.007 - Command and Scripting Interpreter: JavaScript, as it enables execution of malicious JavaScript code within victim browsers. The remediation process should involve upgrading to the latest version of Booking Ultra Pro where the XSS vulnerability has been properly addressed, implementing web application firewalls to detect and block suspicious input patterns, and conducting thorough security testing to ensure no other similar vulnerabilities exist within the application's codebase.