CVE-2025-11769
📋 TL;DR
The WordPress Content Flipper plugin has a stored XSS vulnerability in the 'bgcolor' shortcode attribute that allows authenticated attackers with contributor-level access or higher to inject malicious scripts. These scripts execute when users view compromised pages, potentially stealing credentials or performing unauthorized actions. All WordPress sites using this plugin up to version 0.1 are affected.
💻 Affected Systems
- WordPress Content Flipper 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, deface websites, redirect users to malicious sites, or install backdoors for persistent access.
Likely Case
Attackers with contributor access inject malicious scripts to steal user session cookies or credentials, potentially escalating privileges.
If Mitigated
With proper input validation and output escaping, the vulnerability is eliminated; existing attacks would be prevented by content security policies.
🎯 Exploit Status
Exploitation requires contributor-level access; the vulnerability is straightforward to exploit once authenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: https://plugins.trac.wordpress.org/browser/wp-flipper/tags/0.1/wp-flipper.php
Restart Required: No
Instructions:
1. Remove the Content Flipper plugin from your WordPress installation. 2. Delete all plugin files from the wp-content/plugins directory. 3. Check for and remove any malicious content from posts/pages.
🔧 Temporary Workarounds
Disable Plugin
allDeactivate the Content Flipper plugin to prevent exploitation.
wp plugin deactivate wp-flipper
Restrict User Roles
allLimit contributor-level access to trusted users only.
🧯 If You Can't Patch
- Remove the plugin entirely from your WordPress installation.
- Implement a Content Security Policy (CSP) to mitigate XSS attacks.
🔍 How to Verify
Check if Vulnerable:
Check if the wp-flipper plugin exists in wp-content/plugins directory and if its version is 0.1 or earlier.Check Version:
wp plugin list --name=wp-flipper --field=versionVerify Fix Applied:
Confirm the wp-flipper plugin is no longer present in wp-content/plugins directory.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to wp-admin with 'bgcolor' parameter containing script tags
- Multiple failed login attempts followed by successful contributor login
Network Indicators:
- HTTP requests containing malicious script payloads in 'bgcolor' parameter
- Outbound connections to suspicious domains after page load
SIEM Query:
source="wordpress" AND (http_request="*bgcolor=*script*" OR http_request="*wp-flipper*")