CVE-2025-40731
📋 TL;DR
A critical SQL injection vulnerability in Daily Expense Manager v1.0 allows attackers to manipulate database operations through unvalidated parameters in the update.php endpoint. This enables complete database compromise including data theft, modification, and deletion. All users running the vulnerable version are affected.
💻 Affected Systems
- Daily Expense Manager
📦 What is this software?
Daily Expense Manager by Code Projects
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data destruction, credential theft, and potential server takeover via subsequent attacks.
Likely Case
Data exfiltration of sensitive financial information and unauthorized modification of expense records.
If Mitigated
Limited impact with proper input validation and database permissions restricting damage scope.
🎯 Exploit Status
SQL injection via URL parameters is trivial to exploit with standard tools.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-daily-expense-manager
Restart Required: No
Instructions:
No official patch available. Consider migrating to alternative software or implementing workarounds.
🔧 Temporary Workarounds
Input Validation Filter
allAdd parameter validation to reject SQL injection attempts
Modify update.php to validate pname, pprice, and id parameters using prepared statements
Web Application Firewall
allDeploy WAF with SQL injection rules to block malicious requests
🧯 If You Can't Patch
- Isolate the application behind a reverse proxy with strict input filtering
- Implement database user with minimal permissions (read-only if possible)
🔍 How to Verify
Check if Vulnerable:
Test update.php endpoint with SQL injection payloads in pname, pprice, or id parametersCheck Version:
Check application version in interface or configuration filesVerify Fix Applied:
Verify prepared statements are used and SQL injection attempts return errors without database interaction📡 Detection & Monitoring
Log Indicators:
- Unusual database queries from web server
- SQL syntax errors in application logs
- Multiple parameter manipulation attempts to update.php
Network Indicators:
- HTTP requests to update.php with SQL keywords in parameters
- Unusual database port traffic from web server
SIEM Query:
source="web_logs" AND uri="/update.php" AND (param="pname" OR param="pprice" OR param="id") AND (content="UNION" OR content="SELECT" OR content="INSERT" OR content="DELETE")