CVE-2025-48311
📋 TL;DR
A Cross-Site Request Forgery (CSRF) vulnerability in the OffClicks Invisible Optin WordPress plugin allows attackers to inject malicious scripts that become stored XSS. When exploited, this lets attackers execute arbitrary JavaScript in victims' browsers. WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- OffClicks Invisible Optin 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 persistent malicious scripts that steal admin credentials, redirect users to malicious sites, or deface the website for all visitors.
Likely Case
Attackers trick authenticated users into performing unintended actions like changing plugin settings or injecting malicious content visible to other users.
If Mitigated
With proper CSRF protections and input validation, the vulnerability would be prevented from being exploited.
🎯 Exploit Status
CSRF vulnerabilities typically have low exploitation complexity, requiring only a crafted request. No public exploit code is known at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.0.1 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Invisible Optin' and check if update is available. 4. Click 'Update Now' to install version 1.0.1 or later. 5. Verify the plugin is active and functioning correctly.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the vulnerable plugin until patched.
wp plugin deactivate invisible-optin
Implement CSRF Protection
allAdd CSRF tokens to forms and validate them server-side.
🧯 If You Can't Patch
- Disable the Invisible Optin plugin immediately.
- Implement web application firewall (WAF) rules to block suspicious requests targeting the plugin.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for 'Invisible Optin' version. If version is 1.0 or earlier, it is vulnerable.Check Version:
wp plugin get invisible-optin --field=versionVerify Fix Applied:
After updating, confirm plugin version is 1.0.1 or later in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to wp-admin/admin-ajax.php or plugin-specific endpoints
- Multiple failed CSRF token validations
Network Indicators:
- Unexpected JavaScript payloads in HTTP requests
- Requests with missing or malformed CSRF tokens
SIEM Query:
source="wordpress.log" AND ("invisible-optin" OR "admin-ajax.php") AND (POST OR "csrf")