CVE-2025-31569
📋 TL;DR
A Cross-Site Request Forgery (CSRF) vulnerability in the WordPress Related Posts with Thumbnails plugin allows attackers to perform stored cross-site scripting (XSS) attacks. When exploited, this could let attackers inject malicious scripts into WordPress sites that execute when users view affected pages. WordPress administrators using vulnerable plugin versions are affected.
💻 Affected Systems
- WordPress Related Posts with Thumbnails 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 inject malicious JavaScript that steals administrator credentials, redirects users to malicious sites, or defaces the website when users view related posts.
Likely Case
Attackers trick administrators into clicking malicious links that modify plugin settings to inject XSS payloads, potentially compromising user sessions or displaying unwanted content.
If Mitigated
With proper CSRF protections and content security policies, the attack would fail or have limited impact.
🎯 Exploit Status
Exploitation requires tricking an authenticated administrator into performing an action via CSRF. No public exploit code is known.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 3.0.0.1
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Related Posts with Thumbnails'. 4. Click 'Update Now' if available. 5. If no update appears, manually download latest version from WordPress repository and replace plugin files.
🔧 Temporary Workarounds
Implement CSRF Protection Headers
allAdd Content Security Policy headers to restrict script execution sources
Add to .htaccess: Header set Content-Security-Policy "script-src 'self'"
Add to wp-config.php: define('FORCE_SSL_ADMIN', true);
🧯 If You Can't Patch
- Disable the Related Posts with Thumbnails plugin immediately
- Implement web application firewall rules to block suspicious POST requests to plugin endpoints
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for 'Related Posts with Thumbnails' version. If version is 3.0.0.1 or earlier, you are vulnerable.Check Version:
wp plugin list --name='related-posts-with-thumbnails' --field=versionVerify Fix Applied:
After updating, verify plugin version shows higher than 3.0.0.1 in WordPress plugins list.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /wp-admin/admin-ajax.php with plugin-related actions
- Multiple failed CSRF token validations in WordPress debug logs
Network Indicators:
- Suspicious referrer headers in POST requests to WordPress admin endpoints
- Unexpected JavaScript payloads in plugin settings API calls
SIEM Query:
source="wordpress.log" AND ("admin-ajax.php" AND "action=related_posts")