CVE-2025-23873
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in the Category D3 Tree WordPress plugin allows attackers to inject malicious scripts into web pages. When users view affected pages, the scripts execute in their browsers, potentially stealing session cookies or performing actions on their behalf. All WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- Category D3 Tree 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 session cookies, take over WordPress sites, deface websites, or redirect visitors to malicious sites.
Likely Case
Attackers inject malicious JavaScript to steal user session cookies or credentials, potentially compromising user accounts.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before reaching users' browsers.
🎯 Exploit Status
Stored XSS vulnerabilities are commonly exploited. Attackers need contributor-level access or higher to inject malicious scripts.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 1.1
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Category D3 Tree' plugin. 4. Click 'Update Now' if update available. 5. If no update available, deactivate and delete the plugin.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily deactivate the vulnerable plugin until patched version is available.
wp plugin deactivate category-d3-tree
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 wp-config.php: header("Content-Security-Policy: default-src 'self'; script-src 'self'");
🧯 If You Can't Patch
- Remove the plugin completely and find an alternative solution for category tree visualization.
- Implement web application firewall (WAF) rules to block XSS payloads targeting this plugin.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Installed Plugins for 'Category D3 Tree' version 1.1 or earlier.Check Version:
wp plugin list --name=category-d3-tree --field=versionVerify Fix Applied:
Verify plugin version is higher than 1.1 or plugin is removed from installed plugins list.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to plugin admin pages with script tags in parameters
- Multiple failed login attempts followed by plugin configuration changes
Network Indicators:
- HTTP requests containing <script> tags in POST parameters to plugin endpoints
- Outbound connections to suspicious domains from WordPress admin pages
SIEM Query:
source="wordpress.log" AND ("category-d3-tree" OR "d3-tree") AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")