CVE-2025-11376
📋 TL;DR
The Colibri Page Builder WordPress plugin has a stored cross-site scripting vulnerability in its 'colibri_loop' shortcode. Authenticated attackers with contributor-level access or higher can inject malicious scripts that execute when users view compromised pages. This affects all WordPress sites using vulnerable plugin versions.
💻 Affected Systems
- Colibri Page Builder 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 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 to steal user session cookies or display phishing content to visitors.
If Mitigated
With proper input validation and output escaping, malicious scripts would be neutralized before execution.
🎯 Exploit Status
Exploitation requires authenticated access with contributor privileges or higher. The vulnerability is in a widely used WordPress plugin.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after 1.0.335
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Colibri Page Builder. 4. Click 'Update Now' if available. 5. Alternatively, download latest version from WordPress repository and replace plugin files.
🔧 Temporary Workarounds
Disable colibri_loop shortcode
allRemove or disable the vulnerable shortcode functionality
Add to theme's functions.php: remove_shortcode('colibri_loop');
Restrict user permissions
allLimit contributor-level access to trusted users only
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block XSS payloads in shortcode attributes
- Regularly audit user accounts and remove unnecessary contributor-level permissions
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins → Colibri Page Builder version numberCheck Version:
wp plugin list --name=colibri-page-builder --field=versionVerify Fix Applied:
Verify plugin version is higher than 1.0.335 and test shortcode functionality with safe test payloads📡 Detection & Monitoring
Log Indicators:
- Unusual shortcode modifications in page/post content
- Multiple failed login attempts followed by successful contributor login
Network Indicators:
- Outbound connections to suspicious domains from WordPress pages
- Unexpected script tags in page responses containing colibri_loop shortcodes
SIEM Query:
source="wordpress" AND ("colibri_loop" NEAR "script" OR "colibri_loop" NEAR "onerror" OR "colibri_loop" NEAR "javascript")