CVE-2025-11125
📋 TL;DR
This vulnerability allows attackers to inject malicious scripts into the langleyfcu Online Banking System's error message handler via the /connection_error.php file. Remote attackers can exploit this cross-site scripting (XSS) vulnerability to potentially steal user credentials or session cookies. All users of affected versions are at risk when accessing the vulnerable system.
💻 Affected Systems
- langleyfcu Online Banking System
⚠️ 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 could steal banking credentials, hijack user sessions, perform unauthorized transactions, or redirect users to malicious sites.
Likely Case
Attackers steal session cookies to impersonate users, potentially accessing account information and performing limited unauthorized actions.
If Mitigated
With proper input validation and output encoding, the vulnerability would be prevented, and with web application firewalls, exploitation attempts would be blocked.
🎯 Exploit Status
The exploit has been made public and remote exploitation is possible. Attack complexity is low as it requires only web access to the vulnerable endpoint.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after commit 57437e6400ce0ae240e692c24e6346b8d0c17d7a
Vendor Advisory: Not provided
Restart Required: No
Instructions:
1. Update to the latest version of langleyfcu Online Banking System. 2. Apply input validation and output encoding to the Error parameter in /connection_error.php. 3. Test the fix by attempting to inject script payloads.
🔧 Temporary Workarounds
Web Application Firewall (WAF) Rule
allDeploy WAF rules to block XSS payloads targeting the /connection_error.php endpoint
Input Validation Filter
allImplement server-side filtering to sanitize the Error parameter before processing
🧯 If You Can't Patch
- Disable or restrict access to /connection_error.php if not essential
- Implement Content Security Policy (CSP) headers to mitigate XSS impact
🔍 How to Verify
Check if Vulnerable:
Test by accessing /connection_error.php?Error=<script>alert('XSS')</script> and checking if script executesCheck Version:
Check git commit hash or contact vendor for version informationVerify Fix Applied:
Repeat the test with the same payload and confirm script does not execute📡 Detection & Monitoring
Log Indicators:
- Unusual requests to /connection_error.php with script tags or JavaScript in parameters
- Multiple failed connection attempts followed by error page access
Network Indicators:
- HTTP requests containing <script> tags or JavaScript in Error parameter
- Traffic patterns showing exploitation attempts
SIEM Query:
source="web_logs" AND uri_path="/connection_error.php" AND (query_string="*<script>*" OR query_string="*javascript:*")