CVE-2025-62135
📋 TL;DR
This DOM-based XSS vulnerability in the Responsive Block Control WordPress plugin allows attackers to inject malicious scripts into web pages viewed by other users. It affects all WordPress sites using the plugin versions up to 1.2.9. Attackers can execute arbitrary JavaScript in victims' browsers when they visit compromised pages.
💻 Affected Systems
- WordPress Responsive Block Control 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 steal admin session cookies, take over WordPress sites, deface websites, or redirect visitors to malicious sites, potentially leading to complete site compromise and data theft.
Likely Case
Attackers steal user session cookies, perform actions on behalf of authenticated users, or redirect users to phishing pages to steal credentials.
If Mitigated
With proper input validation and output encoding, malicious scripts are neutralized before reaching users' browsers, preventing exploitation.
🎯 Exploit Status
DOM-based XSS typically requires user interaction but can be exploited via crafted links or stored content.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.3.0 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Responsive Block Control'. 4. Click 'Update Now' if available. 5. Alternatively, download version 1.3.0+ from WordPress.org and manually update.
🔧 Temporary Workarounds
Disable plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate responsive-block-control
Implement CSP headers
allAdd Content Security Policy headers to mitigate XSS impact
Add 'Content-Security-Policy: script-src 'self'' to web server configuration
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block XSS payloads
- Monitor for suspicious JavaScript execution in user browsers
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for Responsive Block Control versionCheck Version:
wp plugin get responsive-block-control --field=versionVerify Fix Applied:
Verify plugin version is 1.3.0 or higher in WordPress admin📡 Detection & Monitoring
Log Indicators:
- Unusual JavaScript in POST/GET parameters
- Suspicious user agent strings with script tags
Network Indicators:
- HTTP requests containing script tags or JavaScript in parameters
SIEM Query:
source="web_logs" AND ("<script" OR "javascript:" OR "onerror=" OR "onload=")