CVE-2025-12593 is a vulnerability identified in version 2.0 of the Simple Online Hotel Reservation System developed by code-projects. The flaw exists in an unspecified function within the /admin/edit_room.php file, specifically in the Photo Handler component responsible for managing image uploads related to hotel room listings. The vulnerability allows an attacker with administrative privileges to perform unrestricted file uploads remotely. This means the system fails to properly validate or restrict the types, sizes, or contents of files uploaded, potentially enabling an attacker to upload malicious files such as web shells or scripts. The vulnerability does not require user interaction but does require the attacker to have high-level privileges (admin access). The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no authentication required (AT:N) but with privileges required (PR:H), no user interaction (UI:N), and low impact on confidentiality, integrity, and availability (VC:L, VI:L, VA:L). The exploit code is publicly available, increasing the risk of exploitation if administrative credentials are compromised. No patches or fixes have been linked yet, and no active exploitation has been reported. The vulnerability could allow attackers to execute arbitrary code, deface the website, or disrupt service by uploading malicious files, thus compromising the system’s security posture.

The impact of CVE-2025-12593 primarily affects organizations using the Simple Online Hotel Reservation System version 2.0, particularly those that have not implemented additional security controls around file uploads. Successful exploitation could lead to unauthorized code execution, website defacement, data leakage, or service disruption. Since the vulnerability requires administrative privileges, the initial compromise vector is likely through credential theft or insider threat. Once exploited, attackers could gain persistent access, manipulate reservation data, or pivot to other internal systems. This poses a risk to confidentiality, integrity, and availability of the affected systems. The presence of publicly available exploit code increases the likelihood of opportunistic attacks. The impact is especially critical for hospitality organizations that rely on this system for booking management, as disruptions could affect customer trust and business operations. However, the medium CVSS score reflects the requirement for high privileges, limiting the scope of exploitation to already compromised or malicious insiders.

1. Restrict administrative access strictly to trusted personnel and enforce strong authentication mechanisms such as multi-factor authentication (MFA) to reduce the risk of credential compromise. 2. Implement strict file upload validation controls, including whitelisting allowed file types, enforcing file size limits, and scanning uploaded files for malware before processing. 3. Employ web application firewalls (WAFs) to detect and block suspicious upload attempts or malicious payloads. 4. Monitor administrative activities and file upload logs for unusual behavior or unauthorized uploads. 5. Isolate the upload directory with appropriate permissions and disable execution rights on uploaded files to prevent execution of malicious scripts. 6. Regularly update and patch the Simple Online Hotel Reservation System once vendor fixes become available. 7. Conduct security awareness training for administrators to recognize phishing and social engineering attacks that could lead to credential theft. 8. Consider network segmentation to limit the impact of a compromised administrative account. 9. If patching is delayed, temporarily disable the photo upload functionality or restrict it to a safe subset of users.