CVE-2025-31780
📋 TL;DR
This CVE describes a Missing Authorization vulnerability in the WordPress Append Content plugin that allows attackers to change plugin settings without proper authentication. It affects all WordPress sites using Append Content plugin versions up to 2.1.1. The vulnerability enables Cross-Site Request Forgery (CSRF) attacks that can modify plugin configuration.
💻 Affected Systems
- WordPress Append Content 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 modify plugin settings to inject malicious content, redirect users to phishing sites, or disrupt website functionality for all visitors.
Likely Case
Malicious actors could change content display settings, inject unwanted advertisements, or modify how content appears on affected WordPress sites.
If Mitigated
With proper CSRF protection and authorization checks, only authenticated administrators could modify plugin settings.
🎯 Exploit Status
Exploitation requires tricking an authenticated administrator into clicking a malicious link or visiting a compromised page (CSRF attack).
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.1.2 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Append Content' plugin. 4. Click 'Update Now' if available. 5. Alternatively, download version 2.1.2+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Disable Append Content Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate append-content
Implement CSRF Protection
allAdd WordPress nonce verification to plugin settings pages
🧯 If You Can't Patch
- Remove Append Content plugin completely if not essential
- Implement web application firewall rules to block unauthorized POST requests to plugin settings endpoints
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Append Content > Version. If version is 2.1.1 or earlier, system is vulnerable.Check Version:
wp plugin get append-content --field=versionVerify Fix Applied:
Verify Append Content plugin version is 2.1.2 or later in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unauthorized POST requests to /wp-admin/admin.php?page=append-content
- Changes to append-content settings without admin user action
Network Indicators:
- POST requests to plugin settings endpoints without proper referrer headers or nonce tokens
SIEM Query:
source="wordpress.log" AND (uri_path="/wp-admin/admin.php" AND query_string="page=append-content") AND http_method="POST"