CVE-2024-12472

5.3 MEDIUM

📋 TL;DR

The Post Duplicator WordPress plugin allows authenticated attackers with Contributor-level access or higher to duplicate password-protected, private, or draft posts they shouldn't have access to, exposing sensitive content. This affects all WordPress sites using Post Duplicator version 2.36 or earlier.

💻 Affected Systems

Products:
  • Post Duplicator WordPress Plugin
Versions: All versions up to and including 2.36
Operating Systems: Any OS running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: Requires WordPress installation with Post Duplicator plugin enabled and at least one user with Contributor role or higher.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Sensitive unpublished content, confidential drafts, or password-protected posts containing proprietary information, personal data, or embargoed material could be exposed to unauthorized users.

🟠

Likely Case

Contributors or authors gaining unauthorized access to other users' draft posts, potentially exposing editorial content, unpublished articles, or internal communications.

🟢

If Mitigated

With proper user role management and access controls, impact is limited to authorized users who already have some level of access to the WordPress admin area.

🌐 Internet-Facing: MEDIUM
🏢 Internal Only: MEDIUM

🎯 Exploit Status

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

Exploitation requires authenticated access to WordPress admin area with at least Contributor privileges. The vulnerability is in the mtphr_duplicate_post() function.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 2.37

Vendor Advisory: https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3219375%40post-duplicator&new=3219375%40post-duplicator&sfp_email=&sfph_mail=

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Post Duplicator and click 'Update Now'. 4. Alternatively, download version 2.37+ from WordPress plugin repository and manually update.

🔧 Temporary Workarounds

Disable Post Duplicator Plugin

all

Temporarily disable the vulnerable plugin until patched

wp plugin deactivate post-duplicator

Restrict User Roles

all

Temporarily remove Contributor role access or limit user permissions

🧯 If You Can't Patch

  • Disable the Post Duplicator plugin immediately
  • Implement strict user role management and audit Contributor-level users

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin → Plugins → Installed Plugins → Post Duplicator version. If version is 2.36 or lower, you are vulnerable.

Check Version:

wp plugin get post-duplicator --field=version

Verify Fix Applied:

After updating, verify Post Duplicator version shows 2.37 or higher in WordPress plugins list.

📡 Detection & Monitoring

Log Indicators:

  • Multiple post duplication actions by Contributor-level users
  • Access to post IDs that user shouldn't have permissions for
  • Unusual duplication of password-protected or private posts

Network Indicators:

  • POST requests to /wp-admin/admin-ajax.php with action=mtphr_duplicate_post
  • Admin area access from unexpected IPs

SIEM Query:

source="wordpress" AND (uri_path="/wp-admin/admin-ajax.php" AND parameters.action="mtphr_duplicate_post")

🔗 References

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