CVE-2025-23440
📋 TL;DR
CVE-2025-23440 is a missing authorization vulnerability in the radSLIDE WordPress plugin that allows attackers to bypass access controls and potentially execute stored cross-site scripting attacks. This affects all radSLIDE plugin versions up to and including 2.1. WordPress sites using vulnerable versions of this plugin are at risk.
💻 Affected Systems
- radSLIDE 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 inject malicious scripts that execute in users' browsers, potentially leading to session hijacking, credential theft, or complete site compromise.
Likely Case
Unauthorized users could modify plugin settings or inject malicious content that affects site visitors, potentially leading to defacement or limited data exposure.
If Mitigated
With proper access controls and input validation, the vulnerability would be prevented from being exploited.
🎯 Exploit Status
Exploitation requires understanding of WordPress plugin structure and access control bypass techniques. The vulnerability leads to stored XSS.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.2 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find radSLIDE plugin. 4. Click 'Update Now' if update is available. 5. If no update appears, manually download version 2.2+ from WordPress repository and replace plugin files.
🔧 Temporary Workarounds
Disable radSLIDE Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate radslide
Restrict Admin Access
linuxImplement IP whitelisting for WordPress admin area
Add to .htaccess: Order Deny,Allow\nDeny from all\nAllow from 192.168.1.0/24
🧯 If You Can't Patch
- Remove radSLIDE plugin completely from the WordPress installation
- Implement web application firewall rules to block unauthorized access to radSLIDE endpoints
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for radSLIDE version. If version is 2.1 or earlier, system is vulnerable.Check Version:
wp plugin get radslide --field=versionVerify Fix Applied:
Verify radSLIDE plugin version is 2.2 or later in WordPress admin panel. Test access control by attempting unauthorized actions that were previously vulnerable.📡 Detection & Monitoring
Log Indicators:
- Unauthorized POST requests to radSLIDE admin endpoints
- Multiple failed authorization attempts to radSLIDE functions
- Unexpected modifications to radSLIDE settings
Network Indicators:
- HTTP requests to /wp-content/plugins/radslide/ with unauthorized parameters
- Unusual traffic patterns to radSLIDE-specific endpoints
SIEM Query:
source="wordpress" AND (uri_path="/wp-admin/admin-ajax.php" AND parameters CONTAINS "radslide") AND response_code=200 AND user_agent NOT IN authorized_admin_agents