CVE-2024-12127
📋 TL;DR
The Sikshya LMS WordPress plugin has a reflected cross-site scripting vulnerability in the 'page' parameter that allows unauthenticated attackers to inject malicious scripts. When users click specially crafted links, attackers can steal session cookies, redirect users, or perform actions on their behalf. All WordPress sites using Sikshya LMS version 0.0.21 or earlier are affected.
💻 Affected Systems
- Sikshya LMS WordPress Plugin
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers steal administrator session cookies, gain full control of WordPress site, install backdoors, deface site, or steal sensitive student data.
Likely Case
Attackers steal user session cookies to hijack accounts, redirect users to phishing sites, or perform limited actions as authenticated users.
If Mitigated
With proper web application firewalls and security headers, malicious scripts are blocked before reaching users.
🎯 Exploit Status
Exploitation requires user interaction (clicking malicious link). No authentication required to trigger vulnerability.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 0.0.22 or later
Vendor Advisory: https://wordpress.org/plugins/sikshya/#developers
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Sikshya LMS plugin. 4. Click 'Update Now' if update available. 5. If no update appears, manually download version 0.0.22+ from WordPress.org and replace plugin files.
🔧 Temporary Workarounds
Web Application Firewall Rule
allBlock malicious 'page' parameter values containing script tags or JavaScript
WAF specific - configure rule to block requests with: page parameter containing <script, javascript:, or onload=
Content Security Policy
allImplement strict CSP headers to prevent script execution from untrusted sources
Add to .htaccess or web server config: Header set Content-Security-Policy "default-src 'self'; script-src 'self'"
For Nginx: add_header Content-Security-Policy "default-src 'self'; script-src 'self';";
🧯 If You Can't Patch
- Disable Sikshya LMS plugin immediately
- Implement strict input validation at web server level for 'page' parameter
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Sikshya LMS version. If version is 0.0.21 or lower, site is vulnerable.Check Version:
wp plugin list --name=sikshya --field=version (if WP-CLI installed) or check WordPress admin plugins pageVerify Fix Applied:
After update, verify plugin version shows 0.0.22 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- HTTP requests with 'page' parameter containing script tags, JavaScript code, or suspicious payloads
- Multiple failed XSS attempts in web server logs
Network Indicators:
- Outgoing requests to suspicious domains after user visits Sikshya pages
- Unexpected redirects from Sikshya plugin URLs
SIEM Query:
source="web_server_logs" AND (uri_query="*page=*<script*" OR uri_query="*page=*javascript:*" OR uri_query="*page=*onload=*")