CVE-2026-1154
📋 TL;DR
This vulnerability allows attackers to inject malicious scripts into the E-Learning System's lesson module through Title/Description fields. When executed, this cross-site scripting (XSS) attack can steal session cookies, redirect users, or perform actions on their behalf. Organizations using SourceCodester E-Learning System 1.0 are affected.
💻 Affected Systems
- SourceCodester E-Learning System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers steal administrator session cookies, gain full system access, and compromise all user data including student records and credentials.
Likely Case
Attackers steal user session cookies to impersonate legitimate users, potentially accessing sensitive course materials or personal information.
If Mitigated
With proper input validation and output encoding, the attack fails to execute, resulting in no impact beyond failed exploitation attempts.
🎯 Exploit Status
Exploit code is publicly available, making this easy for attackers to weaponize. Attackers need admin access to the lesson module to exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.sourcecodester.com/
Restart Required: No
Instructions:
No official patch available. Monitor vendor website for updates. Consider implementing workarounds or replacing the software.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side input validation to sanitize Title and Description fields before processing
Modify /admin/modules/lesson/index.php to add HTML entity encoding for user inputs
Content Security Policy
allImplement CSP headers to restrict script execution
Add header: Content-Security-Policy: script-src 'self'
🧯 If You Can't Patch
- Restrict access to the admin interface using network segmentation and IP whitelisting
- Implement web application firewall (WAF) rules to block XSS payloads in Title/Description parameters
🔍 How to Verify
Check if Vulnerable:
Test by submitting a basic XSS payload like <script>alert('test')</script> in the Title or Description field of the lesson moduleCheck Version:
Check the software version in the admin dashboard or review the installation files for version indicatorsVerify Fix Applied:
After implementing fixes, test with the same XSS payload to ensure it's properly sanitized and doesn't execute📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /admin/modules/lesson/index.php with script tags in parameters
- Multiple failed login attempts followed by successful admin login
Network Indicators:
- HTTP requests containing <script> tags in Title or Description parameters
- Outbound connections to suspicious domains after admin login
SIEM Query:
source="web_logs" AND uri="/admin/modules/lesson/index.php" AND (param="Title" OR param="Description") AND (value="*<script>*" OR value="*javascript:*")