CVE-2025-67545
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in the FireBox WordPress plugin allows attackers to inject malicious scripts into web pages that are then executed when other users view those pages. It affects all WordPress sites running FireBox plugin versions up to and including 3.1.0-free. The vulnerability requires user interaction but can lead to session hijacking, credential theft, or website defacement.
💻 Affected Systems
- FirePlugins FireBox 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 could steal administrator credentials, take over the WordPress site, install backdoors, or redirect visitors to malicious sites, potentially compromising the entire web server and associated data.
Likely Case
Attackers inject malicious JavaScript to steal user session cookies, redirect users to phishing pages, or deface portions of the website visible to other users.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before reaching users, preventing execution while maintaining functionality.
🎯 Exploit Status
Stored XSS vulnerabilities are commonly exploited in the wild. While no public PoC exists, the vulnerability type is well-understood and easily weaponized by attackers with basic web security knowledge.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 3.1.0-free
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find FireBox plugin. 4. Click 'Update Now' if update available. 5. If no update available, deactivate and remove plugin, then install latest version from WordPress repository.
🔧 Temporary Workarounds
Disable FireBox Plugin
allTemporarily disable the vulnerable plugin until patched version is available
wp plugin deactivate firebox
Implement Content Security Policy
allAdd CSP headers to restrict script execution sources
Add to .htaccess: Header set Content-Security-Policy "default-src 'self'; script-src 'self'"
Add to nginx config: add_header Content-Security-Policy "default-src 'self'; script-src 'self'";
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block XSS payloads
- Restrict plugin access to trusted users only using role-based access controls
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for FireBox version. If version is 3.1.0-free or earlier, you are vulnerable.Check Version:
wp plugin get firebox --field=versionVerify Fix Applied:
After updating, verify FireBox plugin version is greater than 3.1.0-free in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to FireBox endpoints containing script tags or JavaScript code
- Multiple failed login attempts following FireBox-related requests
Network Indicators:
- Outbound connections to suspicious domains from your WordPress site
- Unexpected redirects from FireBox pages
SIEM Query:
source="wordpress.log" AND ("firebox" OR "FireBox") AND ("<script>" OR "javascript:" OR "onload=" OR "onerror=")