CVE-2025-60048 is a Remote File Inclusion (RFI) vulnerability found in the PHP-based Tripster theme developed by axiomthemes, affecting versions up to 1.0.10. The vulnerability arises from improper control over the filename parameter used in PHP include or require statements, allowing an attacker to supply a remote URL that the application then includes and executes. This flaw enables unauthenticated remote attackers to execute arbitrary PHP code on the server, leading to full compromise of the affected system's confidentiality and integrity. The vulnerability has a CVSS 3.1 base score of 8.1, reflecting its high severity, with attack vector being network-based, no privileges required, and user interaction needed (e.g., clicking a crafted link). The scope remains unchanged, meaning the impact is confined to the vulnerable component. Although no public exploits have been reported yet, the nature of RFI vulnerabilities makes them attractive targets for attackers seeking to deploy web shells, steal data, or pivot within networks. The Tripster theme is commonly used in tourism-related websites, which often handle sensitive customer data and bookings, increasing the stakes of exploitation. The vulnerability was reserved in late September 2025 and published in December 2025, but no official patches or advisories have been linked yet. The lack of patch links suggests that users must monitor vendor communications closely. The vulnerability can be mitigated by validating and sanitizing all user inputs that influence file inclusion, disabling allow_url_include in PHP configurations, and applying patches once available.

For European organizations, especially those operating tourism, hospitality, or travel-related websites using the Tripster theme, this vulnerability poses a significant risk. Exploitation can lead to unauthorized remote code execution, allowing attackers to access sensitive customer data, manipulate bookings, or disrupt services. This can result in reputational damage, regulatory penalties under GDPR due to data breaches, and operational downtime. The ease of exploitation without authentication and the high confidentiality and integrity impact make this a critical concern. Attackers could also use compromised servers as footholds for lateral movement within corporate networks. Given the widespread use of PHP in European web hosting environments, the vulnerability could affect a broad range of organizations, from small travel agencies to large hospitality chains. The lack of known exploits currently provides a window for proactive mitigation, but the risk of future exploitation remains high.

Organizations should immediately audit their use of the Tripster theme and identify affected versions (<=1.0.10). Until an official patch is released, they should implement strict input validation and sanitization on all parameters that influence file inclusion, ensuring only trusted, local files can be included. Disabling the PHP configuration directive allow_url_include is critical to prevent remote file inclusion. Web application firewalls (WAFs) can be configured to detect and block suspicious requests attempting to exploit this vulnerability. Regularly monitoring vendor advisories and applying patches promptly once available is essential. Additionally, organizations should conduct security reviews of their PHP applications to identify similar inclusion flaws. Employing least privilege principles on web server processes and isolating web applications can limit the impact of potential exploitation. Finally, maintaining comprehensive backups and incident response plans will aid in recovery if exploitation occurs.