CVE-2025-1312
📋 TL;DR
This vulnerability allows authenticated attackers with Contributor-level access or higher to inject malicious scripts into WordPress pages using the Ultimate Blocks plugin. When users view compromised pages, the scripts execute in their browsers, potentially stealing credentials or performing unauthorized actions. All WordPress sites using Ultimate Blocks plugin versions up to 3.2.7 are affected.
💻 Affected Systems
- Ultimate Blocks – WordPress Blocks 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, redirect users to malicious sites, deface websites, or perform actions on behalf of authenticated users.
Likely Case
Attackers with contributor access inject malicious scripts that steal user session cookies or redirect users to phishing pages.
If Mitigated
With proper input validation and output escaping, the vulnerability is prevented, and only legitimate content is displayed.
🎯 Exploit Status
Exploitation requires authenticated access at Contributor level or higher. The vulnerability is in the buttonTextColor parameter which lacks proper sanitization.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.2.8 or later
Vendor Advisory: https://plugins.trac.wordpress.org/changeset/3260377/
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Ultimate Blocks plugin. 4. Click 'Update Now' if available. 5. Alternatively, download version 3.2.8+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Disable Ultimate Blocks Plugin
allTemporarily disable the vulnerable plugin until patched.
wp plugin deactivate ultimate-blocks
Restrict Contributor Role Access
allRemove Contributor role users or restrict their capabilities.
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block XSS payloads in buttonTextColor parameter
- Apply strict Content Security Policy (CSP) headers to limit script execution
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Ultimate Blocks → Version number. If version is 3.2.7 or lower, you are vulnerable.Check Version:
wp plugin get ultimate-blocks --field=versionVerify Fix Applied:
After updating, verify plugin version is 3.2.8 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to WordPress admin-ajax.php containing buttonTextColor parameter with script tags
- Multiple failed login attempts followed by successful Contributor-level login
Network Indicators:
- HTTP requests with suspicious JavaScript in buttonTextColor parameter
- Outbound connections to unknown domains from WordPress pages
SIEM Query:
source="wordpress.log" AND ("buttonTextColor" AND ("<script>" OR "javascript:" OR "onerror=" OR "onload="))