CVE-2025-23810
📋 TL;DR
This vulnerability in the Len Slider WordPress plugin allows attackers to perform Cross-Site Request Forgery (CSRF) attacks that lead to Reflected Cross-Site Scripting (XSS). Attackers can trick authenticated administrators into executing malicious actions, potentially compromising WordPress sites. All WordPress installations using Len Slider versions up to 2.0.11 are affected.
💻 Affected Systems
- WordPress Len Slider 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 gain administrative access to WordPress sites, install backdoors, steal sensitive data, deface websites, or use the site for further attacks.
Likely Case
Attackers would typically use this to inject malicious scripts that steal session cookies or redirect users to phishing sites, compromising user accounts.
If Mitigated
With proper CSRF tokens and input validation, the attack chain would be broken at the initial CSRF stage, preventing XSS exploitation.
🎯 Exploit Status
Exploitation requires social engineering to trick authenticated users. The CSRF-to-XSS chain increases attack surface but requires user interaction.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 2.0.11
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Len Slider plugin. 4. Click 'Update Now' if update available. 5. If no update available, deactivate and remove plugin until patched version is released.
🔧 Temporary Workarounds
Implement CSRF Protection
allAdd CSRF tokens to all form submissions and state-changing actions in the plugin
Input Validation and Output Encoding
allImplement proper input validation and output encoding to prevent XSS payloads from executing
🧯 If You Can't Patch
- Deactivate and remove the Len Slider plugin immediately
- Implement web application firewall (WAF) rules to block CSRF and XSS patterns
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Installed Plugins → Len Slider version. If version is 2.0.11 or earlier, you are vulnerable.Check Version:
wp plugin list --name=len-slider --field=versionVerify Fix Applied:
After updating, verify Len Slider version is higher than 2.0.11 in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to len-slider admin endpoints
- Suspicious parameters containing script tags or JavaScript in URLs
Network Indicators:
- Requests with suspicious parameters to len-slider endpoints
- CSRF attempts with reflected content in responses
SIEM Query:
source="wordpress" AND (uri="*len-slider*" AND (param="*<script>*" OR param="*javascript:*"))