CVE-2023-50850

4.3 MEDIUM

📋 TL;DR

This CVE describes a missing authorization vulnerability in WooCommerce Subscriptions that allows attackers to exploit incorrectly configured access controls. It affects WordPress sites running WooCommerce Subscriptions versions before 5.8.0, potentially allowing unauthorized access to subscription management functions.

💻 Affected Systems

Products:
  • WooCommerce Subscriptions
Versions: All versions before 5.8.0
Operating Systems: Any OS running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: Requires WordPress with WooCommerce Subscriptions plugin installed. The vulnerability exists in the plugin's access control mechanisms.

⚠️ 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 modify, cancel, or create subscriptions for other users, potentially leading to financial loss, data exposure, or service disruption.

🟠

Likely Case

Unauthorized users accessing subscription management features they shouldn't have access to, potentially viewing or modifying subscription data.

🟢

If Mitigated

Proper access controls and authentication mechanisms prevent unauthorized access, limiting impact to legitimate users only.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

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

Exploitation requires some level of access to the WordPress site but bypasses authorization checks within the plugin.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 5.8.0

Vendor Advisory: https://patchstack.com/database/wordpress/plugin/woocommerce-subscriptions/vulnerability/wordpress-woo-subscriptions-plugin-5-8-0-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 WooCommerce Subscriptions. 4. Click 'Update Now' if available. 5. Alternatively, download version 5.8.0+ from WordPress.org and manually update.

🔧 Temporary Workarounds

Temporary Plugin Deactivation

all

Disable WooCommerce Subscriptions plugin until patched

wp plugin deactivate woocommerce-subscriptions

Access Restriction via .htaccess

linux

Restrict access to subscription-related endpoints

# Add to .htaccess:
<FilesMatch "subscription\.php">
Order Deny,Allow
Deny from all
</FilesMatch>

🧯 If You Can't Patch

  • Implement strict network access controls to limit who can access the WordPress admin interface
  • Enable detailed logging of all subscription-related actions and monitor for unauthorized access attempts

🔍 How to Verify

Check if Vulnerable:

Check WooCommerce Subscriptions plugin version in WordPress admin under Plugins > Installed Plugins

Check Version:

wp plugin get woocommerce-subscriptions --field=version

Verify Fix Applied:

Verify plugin version is 5.8.0 or higher and test subscription management permissions

📡 Detection & Monitoring

Log Indicators:

  • Unauthorized access attempts to subscription management endpoints
  • Unexpected subscription modifications from non-admin users

Network Indicators:

  • Unusual patterns of requests to /wp-admin/admin-ajax.php with subscription-related actions

SIEM Query:

source="wordpress.log" AND ("subscription" OR "woocommerce-subscriptions") AND ("unauthorized" OR "permission denied" OR "admin-ajax")

🔗 References

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