CVE-2025-7155
📋 TL;DR
This critical vulnerability in PHPGurukul Online Notes Sharing System 1.0 allows remote attackers to perform SQL injection via the sessionid parameter in the cookie handler. Attackers can potentially access, modify, or delete database content. All users running the vulnerable version are affected.
💻 Affected Systems
- PHPGurukul Online Notes Sharing System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, data manipulation, or complete system takeover via SQL injection.
Likely Case
Unauthorized data access, session hijacking, and potential privilege escalation.
If Mitigated
Limited impact with proper input validation and WAF protection in place.
🎯 Exploit Status
Public exploit available with step-by-step instructions. Researcher disclosure mentions XPath injection but payload appears to be SQL injection.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://phpgurukul.com/
Restart Required: No
Instructions:
No official patch available. Consider workarounds or alternative software.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement strict input validation and parameterized queries for sessionid parameter
Modify PHP code to use prepared statements: $stmt = $conn->prepare('SELECT * FROM users WHERE sessionid = ?'); $stmt->bind_param('s', $sessionid);
Web Application Firewall Rules
allDeploy WAF rules to block SQL injection patterns in cookie parameters
Add WAF rule: Detect and block SQL injection patterns in Cookie: sessionid header
🧯 If You Can't Patch
- Isolate the system behind a reverse proxy with strict input filtering
- Implement network segmentation to limit database access from application servers
🔍 How to Verify
Check if Vulnerable:
Test with SQL injection payloads in sessionid cookie parameter to /Dashboard endpointCheck Version:
Check application version in admin panel or source code filesVerify Fix Applied:
Verify that SQL injection payloads no longer execute and return error pages📡 Detection & Monitoring
Log Indicators:
- Unusual SQL errors in application logs
- Multiple failed login attempts with SQL patterns in cookies
Network Indicators:
- SQL injection patterns in HTTP Cookie headers
- Unusual database query patterns from application server
SIEM Query:
source="web_logs" AND ("sql" OR "union" OR "select" OR "sleep") AND cookie="sessionid"🔗 References
- https://github.com/Vanshdhawan188/Online-Notes-Sharing-System-Php-Gurukul-Python/blob/main/Online-Notes-Sharing-System-Php-Gurukul-Python-Xpath-Injection.md
- https://github.com/Vanshdhawan188/Online-Notes-Sharing-System-Php-Gurukul-Python/blob/main/Online-Notes-Sharing-System-Php-Gurukul-Python-Xpath-Injection.md#-step-by-step-exploitation-poc
- https://phpgurukul.com/
- https://vuldb.com/?ctiid.315093
- https://vuldb.com/?id.315093
- https://vuldb.com/?submit.606281
- https://github.com/Vanshdhawan188/Online-Notes-Sharing-System-Php-Gurukul-Python/blob/main/Online-Notes-Sharing-System-Php-Gurukul-Python-Xpath-Injection.md
