CVE-2025-8381: Hotel Reservation System SQLi Vulnerability

CVE-2025-8381 Overview

CVE-2025-8381 is a SQL injection vulnerability in Campcodes Online Hotel Reservation System 1.0. The flaw resides in the /add_reserve.php endpoint, where the room_id parameter is passed to a backend SQL query without proper sanitization. Remote attackers with low-level privileges can manipulate the parameter to inject arbitrary SQL statements. The issue is tracked under [CWE-74] (Improper Neutralization of Special Elements in Output Used by a Downstream Component) and has been publicly disclosed. The vendor has not published an advisory at the time of writing.

Critical Impact
Authenticated remote attackers can inject SQL through the room_id parameter in /add_reserve.php, exposing reservation data and potentially the underlying database.

Affected Products

Campcodes Online Hotel Reservation System 1.0
CPE: cpe:2.3:a:campcodes:online_hotel_reservation_system:1.0
Component: campcodes:online_hotel_reservation_system

Discovery Timeline

2025-07-31 - CVE-2025-8381 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-8381

Vulnerability Analysis

The vulnerability exists in the reservation creation flow of the Online Hotel Reservation System. The /add_reserve.php script accepts a room_id parameter from the client and concatenates it into a SQL query string without parameterization or input filtering. Attackers can submit crafted values to break out of the original query context and append additional SQL clauses.

Because the application processes the manipulated room_id server-side, an attacker can read, modify, or enumerate records in the reservation database. The CWE classification [CWE-74] describes the broader injection class, with SQL injection being the realized variant here. EPSS data shows a probability of 0.439% as of June 2026, indicating limited current scanning activity.

Root Cause

The root cause is the absence of prepared statements or input validation on the room_id argument in /add_reserve.php. The application trusts client-supplied input and interpolates it directly into a database query. No type checking, allow-listing, or escaping is performed before the value reaches the SQL engine.

Attack Vector

The attack is delivered over the network against the reservation web endpoint. An authenticated user submits a crafted HTTP request to /add_reserve.php with a malicious room_id value. No user interaction beyond the attacker's own request is required. The exploit has been publicly disclosed through a GitHub issue and indexed in VulDB entry 318359.

No verified proof-of-concept code is included here. Refer to the linked references for technical reproduction details.

Detection Methods for CVE-2025-8381

Indicators of Compromise

HTTP POST or GET requests to /add_reserve.php containing SQL metacharacters such as ', ", --, UNION, or SLEEP( in the room_id parameter
Web server access logs showing abnormally long or URL-encoded room_id values
Database error messages returned to clients referencing syntax errors near the reservation table
Sudden spikes in queries against the reservation table from a single client IP

Detection Strategies

Deploy a web application firewall (WAF) rule that matches SQL injection patterns on requests to /add_reserve.php
Enable database query logging and alert on UNION-based or time-based payloads targeting the reservations table
Correlate authenticated session activity with anomalous parameter values on reservation endpoints

Monitoring Recommendations

Forward web server and PHP error logs to a centralized SIEM for inspection
Baseline normal room_id values (numeric, short) and alert on deviations
Monitor for outbound database connections or data exfiltration from the application server following reservation requests

How to Mitigate CVE-2025-8381

Immediate Actions Required

Restrict access to the Online Hotel Reservation System to trusted networks or behind a VPN until a fix is available
Place the application behind a WAF with SQL injection signatures enabled for /add_reserve.php
Audit existing reservation records and database accounts for signs of unauthorized modification
Rotate database credentials used by the application if compromise is suspected

Patch Information

No official vendor patch has been published. Monitor the Campcodes website and the VulDB tracking entry for updates. In the interim, apply source-level fixes by replacing the vulnerable query with a prepared statement and casting room_id to an integer before use.

Workarounds

Validate that room_id is strictly numeric using intval() or filter_var($room_id, FILTER_VALIDATE_INT) before passing it to any SQL query
Replace string-concatenated SQL with PDO or mysqli prepared statements bound to typed parameters
Apply least-privilege database accounts so the web application cannot read or modify tables outside its scope
Disable verbose database error messages in production PHP configuration

bash

# Configuration example - hardening PHP error output
# /etc/php/php.ini
display_errors = Off
log_errors = On
error_log = /var/log/php/error.log