CVE-2024-50483

9.8 CRITICAL

📋 TL;DR

This vulnerability allows attackers to bypass authorization controls in the WordPress Meetup plugin by manipulating user-controlled keys, potentially leading to privilege escalation. It affects all WordPress sites running the Meetup plugin version 0.1 or earlier. Attackers could gain unauthorized access to administrative functions.

💻 Affected Systems

Products:
  • WordPress Meetup Plugin
Versions: 0.1 and earlier
Operating Systems: All
Default Config Vulnerable: ⚠️ Yes
Notes: Affects all WordPress installations with the vulnerable plugin version installed and activated.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete site takeover where attackers gain administrative privileges, modify content, install backdoors, or compromise user data.

🟠

Likely Case

Unauthorized access to restricted functionality, privilege escalation to editor/admin roles, or manipulation of meetup events and user data.

🟢

If Mitigated

Limited impact with proper network segmentation, strong authentication, and monitoring in place.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

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

Exploitation requires some level of access but is technically simple once initial access is obtained.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 0.2 or later

Vendor Advisory: https://patchstack.com/database/vulnerability/meetup/wordpress-meetup-plugin-0-1-broken-authentication-vulnerability?_s_id=cve

Restart Required: No

Instructions:

1. Log into WordPress admin panel
2. Navigate to Plugins > Installed Plugins
3. Locate 'Meetup' plugin
4. Click 'Update Now' if update is available
5. If no update available, deactivate and delete the plugin
6. Install latest version from WordPress repository

🔧 Temporary Workarounds

Disable Meetup Plugin

all

Temporarily disable the vulnerable plugin until patched

wp plugin deactivate meetup

Restrict Plugin Access

all

Use web application firewall to block access to plugin endpoints

🧯 If You Can't Patch

  • Implement strict network segmentation to isolate WordPress installation
  • Enable detailed logging and monitoring for unauthorized access attempts to plugin endpoints

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel > Plugins > Installed Plugins for Meetup plugin version 0.1 or earlier

Check Version:

wp plugin list --name=meetup --field=version

Verify Fix Applied:

Verify Meetup plugin version is 0.2 or later in WordPress admin panel

📡 Detection & Monitoring

Log Indicators:

  • Unauthorized access attempts to /wp-content/plugins/meetup/ endpoints
  • Multiple failed authentication attempts followed by successful privileged actions
  • Unusual user role changes in WordPress user logs

Network Indicators:

  • Unusual POST requests to meetup plugin endpoints
  • Traffic patterns indicating privilege escalation attempts

SIEM Query:

source="wordpress.log" AND ("meetup" OR "authorization bypass") AND ("failed" OR "unauthorized" OR "admin")

🔗 References

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