CVE-2024-3075
📋 TL;DR
The MM-email2image WordPress plugin through version 0.2.5 contains a stored cross-site scripting (XSS) vulnerability due to improper input validation and escaping of shortcode attributes. This allows authenticated users with contributor-level permissions or higher to inject malicious scripts into pages/posts, which execute when other users view the content. WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- MM-email2image WordPress Plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An attacker with contributor access could inject malicious scripts that steal administrator session cookies, redirect users to phishing sites, or perform actions on behalf of authenticated users, potentially leading to full site compromise.
Likely Case
Malicious contributors inject scripts that display unwanted content, redirect users, or steal session cookies from visitors viewing affected pages/posts.
If Mitigated
With proper user role management and content review processes, the impact is limited to potential defacement or minor disruption on affected pages.
🎯 Exploit Status
Exploitation requires contributor-level access. The vulnerability is publicly documented with technical details available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 0.2.6 or later
Vendor Advisory: https://wpscan.com/vulnerability/450375f6-a9d4-49f6-8bab-867774372795/
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find MM-email2image plugin. 4. Click 'Update Now' if update available. 5. Alternatively, download latest version from WordPress repository and replace plugin files.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate mm-email2image
Restrict User Roles
allTemporarily remove contributor role from untrusted users
wp user remove-role <username> contributor
🧯 If You Can't Patch
- Implement strict content review process for all posts/pages created by contributors
- Add web application firewall rules to block XSS payloads in plugin shortcode attributes
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for MM-email2image version 0.2.5 or earlierCheck Version:
wp plugin get mm-email2image --field=versionVerify Fix Applied:
Verify plugin version is 0.2.6 or later in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unusual post/page edits by contributors containing script tags or encoded payloads
- Multiple failed login attempts followed by successful contributor login
Network Indicators:
- Outbound connections to suspicious domains from WordPress site visitors
- Unusual JavaScript loading patterns in page responses
SIEM Query:
source="wordpress.log" AND ("mm-email2image" OR "shortcode") AND ("script" OR "onerror" OR "javascript:")