CVE-2025-28936
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in the Lunar WordPress plugin allows attackers to inject malicious scripts into web pages that are then executed when other users view those pages. All WordPress sites using Lunar plugin versions up to and including 1.3.0 are affected. The vulnerability enables attackers to steal session cookies, redirect users, or perform actions on their behalf.
💻 Affected Systems
- WordPress Lunar 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 session cookies, take over WordPress sites, install backdoors, deface websites, or redirect users to malicious sites.
Likely Case
Attackers inject malicious JavaScript to steal user session cookies or credentials, potentially compromising user accounts and sensitive data.
If Mitigated
With proper input validation and output encoding, the malicious scripts would be neutralized before execution, preventing any impact.
🎯 Exploit Status
Stored XSS vulnerabilities are commonly exploited. While no public PoC is confirmed, the vulnerability type suggests exploitation is straightforward for attackers with basic web security knowledge.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.3.1 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Lunar' plugin. 4. Click 'Update Now' if update is available. 5. Alternatively, download latest version from WordPress repository and manually update.
🔧 Temporary Workarounds
Disable Lunar plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate lunar
Implement WAF rules
allAdd web application firewall rules to block XSS payloads
🧯 If You Can't Patch
- Implement Content Security Policy (CSP) headers to restrict script execution
- Enable WordPress security plugins with XSS protection features
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for Lunar plugin version. If version is 1.3.0 or earlier, you are vulnerable.Check Version:
wp plugin get lunar --field=versionVerify Fix Applied:
After updating, verify Lunar plugin version shows 1.3.1 or later in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to Lunar plugin endpoints
- JavaScript payloads in form submissions
- Multiple failed XSS attempts
Network Indicators:
- HTTP requests containing script tags or JavaScript code to Lunar endpoints
- Unexpected outbound connections after visiting Lunar pages
SIEM Query:
source="wordpress.log" AND ("lunar" OR "wp-content/plugins/lunar") AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")