CVE-2025-64221 in Reservation Plugin
Summary
by MITRE • 12/18/2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in designthemes Reservation Plugin dt-reservation-plugin allows Reflected XSS.This issue affects Reservation Plugin: from n/a through <= 1.6.
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Analysis
by VulDB Data Team • 12/18/2025
The CVE-2025-64221 vulnerability represents a critical cross-site scripting flaw within the designthemes Reservation Plugin dt-reservation-plugin that enables attackers to execute malicious scripts in the context of affected websites. This reflected XSS vulnerability occurs during web page generation when the plugin fails to properly sanitize user input before incorporating it into dynamic web content. The vulnerability specifically impacts versions of the reservation plugin ranging from the initial release through version 1.6, making a significant portion of installations potentially susceptible to exploitation. The flaw arises from inadequate input validation and output encoding mechanisms that should normally prevent malicious code from being executed when users interact with the plugin's web interfaces.
The technical implementation of this vulnerability stems from the plugin's failure to neutralize potentially malicious input data during the web page generation process. When user-supplied parameters are directly reflected back into web responses without proper sanitization, attackers can inject malicious scripts that execute in the browsers of other users who view the affected pages. This type of vulnerability falls under CWE-79, which specifically addresses improper neutralization of input during web page generation, making it a classic reflected cross-site scripting vulnerability. The attack vector typically involves crafting malicious URLs containing script payloads that, when clicked by victims, get executed in their browser context. The reflected nature of this XSS means that the malicious script is reflected off the web server rather than being stored on the server, making it particularly challenging to detect and prevent.
The operational impact of CVE-2025-64221 extends beyond simple script execution as it can enable attackers to perform various malicious activities including session hijacking, credential theft, data exfiltration, and redirection to malicious sites. An attacker could exploit this vulnerability to steal user sessions, potentially gaining administrative access to reservation systems, or to inject malicious content that could compromise the integrity of the entire website. The vulnerability's presence in the reservation plugin specifically targets booking and reservation functionalities, making it particularly dangerous for businesses that rely on online reservations for their operations. This type of attack can result in significant financial losses, reputational damage, and potential regulatory compliance violations, especially in industries where customer data protection is paramount.
Mitigation strategies for CVE-2025-64221 should prioritize immediate remediation through plugin updates to versions that address the XSS vulnerability, as recommended by the vendor. Organizations should implement comprehensive input validation and output encoding mechanisms that conform to established security standards and practices. The implementation of Content Security Policy headers, proper sanitization of user inputs, and regular security audits can significantly reduce the risk of exploitation. Additionally, network monitoring and intrusion detection systems should be configured to identify and alert on suspicious traffic patterns that may indicate attempted exploitation. The vulnerability aligns with ATT&CK technique T1566.001, which covers spearphishing via web links, and represents a common entry point for attackers seeking to establish persistent access to web applications through user interaction with malicious payloads. Regular security assessments and maintaining updated security patches should be prioritized to prevent similar vulnerabilities from being exploited in the future, particularly given the widespread use of reservation plugins in e-commerce and service-oriented websites.