CVE-2025-63037
📋 TL;DR
This DOM-based Cross-Site Scripting (XSS) vulnerability in the Ronneby Theme Core WordPress plugin allows attackers to inject malicious scripts into web pages viewed by users. When exploited, it can lead to session hijacking, credential theft, or redirection to malicious sites. All WordPress sites using Ronneby Theme Core version 1.5.68 or earlier are affected.
💻 Affected Systems
- Ronneby Theme Core 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, take over WordPress sites, install backdoors, deface websites, or redirect visitors to malware distribution sites.
Likely Case
Attackers steal user session cookies to impersonate logged-in users, potentially gaining access to sensitive user data or performing unauthorized actions.
If Mitigated
With proper input validation and output encoding, the vulnerability would be prevented, maintaining normal site functionality without security risks.
🎯 Exploit Status
DOM-based XSS typically requires user interaction (clicking a malicious link) but can be exploited without authentication. No public exploit code has been identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 1.5.69 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Ronneby Theme Core' and check for updates. 4. If update is available, click 'Update Now'. 5. Alternatively, download version 1.5.69+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Temporary Plugin Deactivation
allDisable the vulnerable plugin until patched version is available
wp plugin deactivate ronneby-core
Content Security Policy (CSP)
allImplement CSP headers to restrict script execution sources
Add to .htaccess: Header set Content-Security-Policy "script-src 'self'"
Add to nginx config: add_header Content-Security-Policy "script-src 'self'";
🧯 If You Can't Patch
- Implement Web Application Firewall (WAF) rules to block XSS payloads
- Disable user input fields that trigger the DOM-based XSS vulnerability
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin > Plugins > Installed Plugins for Ronneby Theme Core version. If version is 1.5.68 or lower, you are vulnerable.Check Version:
wp plugin get ronneby-core --field=versionVerify Fix Applied:
After updating, verify plugin version shows 1.5.69 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual JavaScript payloads in URL parameters
- Multiple failed XSS attempts in web server logs
- Suspicious user-agent strings containing script tags
Network Indicators:
- HTTP requests with encoded script tags in query parameters
- Traffic patterns showing repeated access to specific plugin endpoints
SIEM Query:
source="web_server_logs" AND ("<script" OR "javascript:" OR "onload=" OR "onerror=") AND uri_path="/wp-content/plugins/ronneby-core/"