CVE-2026-86216 in Hotel and Tourism Reservation in PHP
Summary
by MITRE • 09/06/2026
A security vulnerability has been detected in code-projects Hotel and Tourism Reservation in PHP 1.0. This impacts an unknown function of the file /ht/details.php. The manipulation of the argument room leads to cross site scripting. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used.
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Analysis
by VulDB Data Team • 09/06/2026
The identified vulnerability resides within code-projects Hotel and Tourism Reservation version 1.0, specifically affecting an unspecified function within the /ht/details.php file. This software is a web-based application designed to manage hotel bookings and tourism services, typically deployed in environments where user input directly influences dynamic content generation. The core technical flaw is classified as Cross-Site Scripting, commonly referred to by its acronym XSS. In this specific instance, the vulnerability stems from improper validation or sanitization of the room argument passed through HTTP requests. When a malicious actor supplies crafted input containing executable script code within the room parameter, the application fails to neutralize these characters before rendering them in the browser context. Consequently, the injected scripts are executed by the victim's web browser as if they were legitimate content from the trusted server.
From a technical perspective, this represents an instance of reflected or stored cross-site scripting depending on how the input is handled and persisted within the application logic. If the malicious payload is immediately returned in the HTTP response without being saved to a database, it is classified as reflected XSS. However, if the unvalidated room data is subsequently retrieved from a persistent storage medium such as a database and displayed to other users, it becomes stored XSS, which poses a significantly higher risk due to its persistence and broader impact potential. The vulnerability aligns with CWE-79, which describes Improper Neutralization of Input During Web Page Generation known as Cross-site Scripting. This classification highlights the failure of the application developer to implement adequate input validation mechanisms or output encoding strategies that would prevent script injection.
The operational impact of this vulnerability is severe for both end-users and system administrators. Since the exploit can be initiated remotely, an attacker does not need physical access or prior authentication in many scenarios, although some XSS vectors may require user interaction such as clicking a malicious link. Successful exploitation allows attackers to execute arbitrary JavaScript code within the context of the victim's session. This capability enables several detrimental outcomes including session hijacking where the attacker steals sensitive cookies like session tokens to impersonate legitimate users account takeover theft of personal information displayed on the page and defacement of the website interface. In a tourism reservation system, this could lead to financial fraud if attackers manipulate booking details or steal customer payment credentials stored in local storage or accessed via DOM manipulation techniques.
The fact that an exploit has been disclosed publicly significantly elevates the risk profile for organizations still running version 1.0 of this software. Publicly available exploits lower the barrier to entry for less skilled threat actors, leading to a higher probability of automated scanning and exploitation attempts across the internet. Attackers often utilize search engines or vulnerability databases like Exploit-DB to identify vulnerable instances using automated tools that probe for specific signatures associated with known CVEs. The presence of such an exploit means that systems are likely under active surveillance by malicious bots seeking to compromise weakly secured applications.
Mitigation strategies must address both immediate remediation and long-term security posture improvements. The most effective solution is to apply the official patch or update provided by the vendor if available, ensuring that all input fields including the room parameter undergo rigorous server-side validation. Developers should implement strict allow-listing for expected inputs rejecting any data that does not conform to predefined formats such as numeric IDs only. Additionally output encoding must be enforced using context-aware techniques like HTML entity encoding when displaying user-supplied data in web pages. Implementing a Web Application Firewall can provide an additional layer of defense by filtering malicious payloads before they reach the application logic though it should never replace proper code remediation. For immediate protection, administrators should consider restricting access to the /ht/details.php endpoint or disabling specific functionalities until the underlying code is corrected and verified through comprehensive security testing including static analysis and dynamic penetration testing.