CVE-2025-12980
📋 TL;DR
This vulnerability allows unauthenticated attackers to access sensitive user metadata including password hashes via a REST API endpoint in the PostX WordPress plugin. All WordPress sites using PostX plugin versions up to 5.0.3 are affected. The issue stems from missing capability checks on the '/ultp/v2/get_dynamic_content/' endpoint.
💻 Affected Systems
- Post Grid Gutenberg Blocks for News, Magazines, Blog Websites – PostX 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 retrieve password hashes for all users, potentially enabling credential stuffing attacks, account takeovers, and lateral movement within the WordPress environment.
Likely Case
Attackers harvest user metadata including email addresses, usernames, and password hashes, leading to targeted phishing campaigns and credential reuse attacks.
If Mitigated
With proper access controls and monitoring, unauthorized access attempts are detected and blocked before sensitive data is exfiltrated.
🎯 Exploit Status
The vulnerability requires no authentication and involves simple HTTP requests to a known endpoint.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 5.0.4 or later
Vendor Advisory: https://plugins.trac.wordpress.org/changeset/3421729/ultimate-post/trunk/classes/Blocks.php
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'PostX' plugin. 4. Click 'Update Now' if update is available. 5. Alternatively, download version 5.0.4+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Disable vulnerable REST endpoint
allBlock access to the vulnerable '/ultp/v2/get_dynamic_content/' endpoint using web server rules or WordPress filters.
Add to .htaccess: RewriteRule ^wp-json/ultp/v2/get_dynamic_content/ - [F,L]
Add to functions.php: remove_action('rest_api_init', 'ultp_register_rest_routes');
Temporary plugin deactivation
linuxDisable the PostX plugin until patched, though this may break site functionality.
wp plugin deactivate ultimate-post
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block requests to '/wp-json/ultp/v2/get_dynamic_content/' endpoint.
- Monitor access logs for suspicious requests to the vulnerable endpoint and implement rate limiting.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Installed Plugins for PostX version. If version is 5.0.3 or lower, the site is vulnerable.Check Version:
wp plugin list --name=ultimate-post --field=versionVerify Fix Applied:
After updating, verify PostX plugin version is 5.0.4 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- HTTP 200 responses to POST/GET requests for '/wp-json/ultp/v2/get_dynamic_content/' from unauthenticated users
- Unusual spikes in requests to WordPress REST API endpoints
Network Indicators:
- Outbound traffic containing user metadata patterns from WordPress site
- Requests to '/wp-json/ultp/v2/get_dynamic_content/' without authentication headers
SIEM Query:
source="web_server_logs" AND uri_path="/wp-json/ultp/v2/get_dynamic_content/" AND http_status=200 AND NOT user_agent="WordPress/*"