CVE-2023-30754
📋 TL;DR
This vulnerability allows unauthenticated attackers to inject malicious scripts via reflected cross-site scripting (XSS) in the AdFoxly WordPress plugin. When exploited, it can enable session hijacking, credential theft, or website defacement. WordPress sites using vulnerable versions of the AdFoxly plugin are affected.
💻 Affected Systems
- AdFoxly – Ad Manager, AdSense Ads & Ads.Txt WordPress plugin
📦 What is this software?
Adfoxly by Wpfoxly
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator credentials, take over WordPress sites, install backdoors, or redirect visitors to malicious sites.
Likely Case
Attackers would typically use this to steal user session cookies, perform phishing attacks, or deface websites by injecting malicious content.
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
Reflected XSS vulnerabilities are commonly exploited and weaponized due to their simplicity and impact.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.8.6 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'AdFoxly – Ad Manager, AdSense Ads & Ads.Txt'. 4. Click 'Update Now' if available, or manually update to version 1.8.6+. 5. Verify the plugin is updated to at least version 1.8.6.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily disable the AdFoxly plugin until patched
wp plugin deactivate adfoxly
Implement WAF rules
allConfigure web application firewall to block XSS payloads targeting the vulnerable endpoint
🧯 If You Can't Patch
- Implement Content Security Policy (CSP) headers to restrict script execution
- Use input validation and output encoding in custom code to sanitize user inputs
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for AdFoxly version. If version is 1.8.5 or lower, the site is vulnerable.Check Version:
wp plugin get adfoxly --field=versionVerify Fix Applied:
Verify the AdFoxly plugin version is 1.8.6 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual GET/POST requests containing script tags or JavaScript payloads to AdFoxly plugin endpoints
- Multiple failed XSS attempts in web server logs
Network Indicators:
- HTTP requests with suspicious parameters containing <script>, javascript:, or encoded payloads
SIEM Query:
source="web_server_logs" AND (uri="*adfoxly*" AND (param="*<script>*" OR param="*javascript:*"))🔗 References
- https://patchstack.com/database/vulnerability/adfoxly/wordpress-adfoxly-ad-manager-adsense-ads-ads-txt-plugin-1-8-4-cross-site-scripting-xss-vulnerability?_s_id=cve
- https://patchstack.com/database/vulnerability/adfoxly/wordpress-adfoxly-ad-manager-adsense-ads-ads-txt-plugin-1-8-4-cross-site-scripting-xss-vulnerability?_s_id=cve
