CVE-2025-66124

5.3 MEDIUM

📋 TL;DR

This CVE describes a Missing Authorization vulnerability in the ZEEN101 Leaky Paywall WordPress plugin that allows attackers to bypass access controls. It affects all WordPress sites running Leaky Paywall versions up to and including 4.22.5. Attackers could potentially access restricted content without proper authorization.

💻 Affected Systems

Products:
  • ZEEN101 Leaky Paywall WordPress Plugin
Versions: n/a through <= 4.22.5
Operating Systems: Any OS running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: Affects all WordPress installations using vulnerable versions of the Leaky Paywall plugin regardless of configuration.

⚠️ 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.

Recommended Actions:
  1. Review the CVE details at NVD
  2. Check vendor security advisories for your specific version
  3. Test if the vulnerability is exploitable in your environment
  4. Consider updating to the latest version as a precaution

⚠️ Risk & Real-World Impact

🔴

Worst Case

Attackers could access all premium/paywalled content without payment, potentially exposing sensitive subscriber-only materials and undermining the site's revenue model.

🟠

Likely Case

Unauthorized users accessing paywalled content they shouldn't have access to, potentially including premium articles, downloads, or member-only resources.

🟢

If Mitigated

Proper access controls prevent unauthorized content access, maintaining the integrity of the paywall system and protecting revenue streams.

🌐 Internet-Facing: HIGH
🏢 Internal Only: LOW

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ✅ No
Complexity: LOW

The vulnerability involves broken access control which typically requires some level of user interaction but doesn't require authentication.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 4.22.6 or later

Vendor Advisory: https://patchstack.com/database/Wordpress/Plugin/leaky-paywall/vulnerability/wordpress-leaky-paywall-plugin-4-22-5-broken-access-control-vulnerability?_s_id=cve

Restart Required: No

Instructions:

1. Log into WordPress admin panel
2. Navigate to Plugins > Installed Plugins
3. Find Leaky Paywall plugin
4. Click 'Update Now' if update is available
5. If no update appears, manually download version 4.22.6+ from WordPress.org
6. Deactivate, delete old version, upload and activate new version

🔧 Temporary Workarounds

Temporary Plugin Deactivation

all

Disable the Leaky Paywall plugin until patched

wp plugin deactivate leaky-paywall

Access Restriction via .htaccess

linux

Add additional access controls at web server level

# Add to .htaccess in WordPress root:
<FilesMatch "\.(php|html|htm)$">
Order Deny,Allow
Deny from all
Allow from 127.0.0.1
</FilesMatch>

🧯 If You Can't Patch

  • Implement web application firewall (WAF) rules to detect and block unauthorized access attempts to paywalled content
  • Monitor access logs for unusual patterns of content access and implement additional authentication layers for sensitive content

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel > Plugins > Leaky Paywall version. If version is 4.22.5 or lower, you are vulnerable.

Check Version:

wp plugin get leaky-paywall --field=version

Verify Fix Applied:

Verify Leaky Paywall version is 4.22.6 or higher in WordPress admin panel, then test access to paywalled content with unauthorized user accounts.

📡 Detection & Monitoring

Log Indicators:

  • Multiple failed access attempts to restricted content endpoints
  • Unauthorized users accessing paywalled content URLs
  • Unusual patterns in content access from single IPs

Network Indicators:

  • HTTP requests to paywalled content without proper authorization headers
  • Unusual traffic to /wp-content/plugins/leaky-paywall/ endpoints

SIEM Query:

source="wordpress.log" AND ("leaky-paywall" OR "paywall") AND (status=200 OR status=302) AND user="unauthenticated"

🔗 References

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