CVE-2023-6786
📋 TL;DR
The Payment Gateway for Telcell WordPress plugin through version 2.0.1 contains an open redirect vulnerability. Attackers can craft malicious URLs that redirect users to arbitrary external websites when the vulnerable parameter is accessed. This affects all WordPress sites using the vulnerable plugin version.
💻 Affected Systems
- Payment Gateway for Telcell WordPress plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Users could be redirected to phishing sites that steal credentials or deliver malware, potentially leading to account compromise, financial loss, or system infection.
Likely Case
Attackers use the vulnerability for phishing campaigns, tricking users into visiting malicious sites that appear legitimate due to the trusted WordPress domain in the initial URL.
If Mitigated
With proper user awareness training and browser security controls, users might recognize suspicious redirects or be blocked from visiting known malicious sites.
🎯 Exploit Status
Exploitation requires no authentication and involves simple URL manipulation. The vulnerability is publicly documented with proof-of-concept examples.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.0.2 or later
Vendor Advisory: https://wpscan.com/vulnerability/f3e64947-3138-4ec4-86c4-27b5d6a5c9c2/
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Payment Gateway for Telcell' and check if update is available. 4. Click 'Update Now' to install version 2.0.2 or later. 5. Verify the plugin is active and functioning correctly.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily deactivate the Payment Gateway for Telcell plugin until patched.
wp plugin deactivate payment-gateway-for-telcell
Web application firewall rule
allBlock requests containing malicious redirect URLs targeting the api_url parameter.
🧯 If You Can't Patch
- Implement strict Content Security Policy (CSP) headers to restrict redirect destinations.
- Monitor web server logs for suspicious redirect patterns and block malicious IP addresses.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for 'Payment Gateway for Telcell' version 2.0.1 or earlier.Check Version:
wp plugin get payment-gateway-for-telcell --field=versionVerify Fix Applied:
Confirm plugin version is 2.0.2 or later in WordPress admin panel, and test that redirects from the plugin only go to allowed domains.📡 Detection & Monitoring
Log Indicators:
- HTTP 302 redirect responses from the plugin containing external domains in the Location header
- URLs with api_url parameter pointing to non-telcell domains
Network Indicators:
- Outbound HTTP requests to unexpected domains following access to the vulnerable endpoint
SIEM Query:
event_type:web_access AND url:*api_url=* AND NOT url:*api_url=telcell*