CVE-2025-51411
📋 TL;DR
A reflected cross-site scripting vulnerability in Institute-of-Current-Students v1.0 allows unauthenticated attackers to inject malicious JavaScript via the email parameter in the /postquerypublic endpoint. This affects all users of the vulnerable software who could be tricked into visiting a malicious link. Attackers can execute arbitrary code in victims' browsers to steal credentials or hijack sessions.
💻 Affected Systems
- Institute-of-Current-Students
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete account takeover, credential theft, administrative access compromise, and lateral movement within the application.
Likely Case
Session hijacking, credential theft from users who click malicious links, and potential data exfiltration.
If Mitigated
Limited impact with proper input validation and output encoding, potentially only minor data leakage.
🎯 Exploit Status
Exploitation requires social engineering to trick users into clicking malicious links but is technically simple.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
1. Implement proper input validation and output encoding for the email parameter. 2. Sanitize all user inputs before reflecting them in HTML responses. 3. Apply Content Security Policy headers to restrict script execution.
🔧 Temporary Workarounds
Web Application Firewall (WAF) Rule
allDeploy WAF rules to block XSS payloads in the email parameter
# Example ModSecurity rule: SecRule ARGS:email "@detectXSS" "id:1001,phase:2,deny,status:403"
Input Validation Filter
allImplement server-side validation to reject suspicious email parameter values
# Example PHP filter: if(preg_match('/[<>"\']/', $_POST['email'])) { die('Invalid input'); }
🧯 If You Can't Patch
- Implement strict Content Security Policy headers to prevent script execution
- Deploy network segmentation to isolate vulnerable systems from critical assets
🔍 How to Verify
Check if Vulnerable:
Test by sending payload: <script>alert('XSS')</script> in email parameter to /postquerypublic endpoint and check if script executesCheck Version:
Check application version in configuration files or about pageVerify Fix Applied:
Test with same payload and verify script does not execute; check response headers for CSP implementation📡 Detection & Monitoring
Log Indicators:
- Unusual length email parameters
- Presence of script tags or JavaScript in email field logs
- Multiple failed requests with XSS payloads
Network Indicators:
- HTTP requests with script tags in email parameter
- Unusual referrer headers containing malicious URLs
SIEM Query:
source="web_logs" AND (email="*<script>*" OR email="*javascript:*" OR email="*onerror=*")