CVE-2025-30584
📋 TL;DR
This CSRF vulnerability in the AlphaOmega Captcha & Anti-Spam Filter WordPress plugin allows attackers to trick authenticated administrators into executing actions without their consent, leading to stored XSS payloads being injected. It affects all WordPress sites using this plugin from unknown versions through 3.3. The vulnerability enables attackers to compromise site integrity and potentially hijack user sessions.
💻 Affected Systems
- AlphaOmega Captcha & Anti-Spam Filter 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 malicious JavaScript that steals administrator credentials, redirects users to malicious sites, or defaces the website for all visitors.
Likely Case
Attackers would inject XSS payloads to hijack administrator sessions, modify site content, or install backdoors through the compromised admin account.
If Mitigated
With proper CSRF protections and content security policies, the attack would fail or have limited impact.
🎯 Exploit Status
Exploitation requires social engineering to trick administrators into visiting malicious pages while authenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 3.3
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find AlphaOmega Captcha & Anti-Spam Filter. 4. Click 'Update Now' if available. 5. If no update appears, deactivate and delete the plugin, then install the latest version from WordPress repository.
🔧 Temporary Workarounds
Implement CSRF Protection Headers
allAdd security headers to WordPress to help prevent CSRF attacks
Add to .htaccess: Header set X-Frame-Options "DENY"
Add to .htaccess: Header set Content-Security-Policy "frame-ancestors 'none'"
Add to wp-config.php: define('FORCE_SSL_ADMIN', true);
🧯 If You Can't Patch
- Disable the AlphaOmega Captcha & Anti-Spam Filter plugin immediately
- Implement a Web Application Firewall (WAF) with CSRF and XSS protection rules
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for AlphaOmega Captcha & Anti-Spam Filter version 3.3 or earlierCheck Version:
wp plugin list --name="AlphaOmega Captcha & Anti-Spam Filter" --field=versionVerify Fix Applied:
Verify plugin version is higher than 3.3 in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to wp-admin/admin-ajax.php from unexpected referrers
- Multiple failed CSRF token validations in WordPress logs
- Unexpected plugin settings changes in WordPress activity logs
Network Indicators:
- HTTP requests with suspicious referrer headers pointing to external domains
- Multiple POST requests to admin endpoints without proper CSRF tokens
SIEM Query:
source="wordpress.log" AND ("admin-ajax.php" OR "wp-admin") AND ("csrf" OR "invalid nonce" OR "referer")