CVE-2025-62050

9.9 CRITICAL

📋 TL;DR

This vulnerability allows attackers to upload arbitrary files to WordPress sites using the Blogmatic theme, potentially leading to remote code execution. It affects all WordPress installations with Blogmatic theme versions up to and including 1.0.3. Attackers can exploit this without authentication to compromise the entire website.

💻 Affected Systems

Products:
  • WordPress Blogmatic Theme
Versions: n/a through <= 1.0.3
Operating Systems: All operating systems running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: Affects all WordPress installations using vulnerable Blogmatic theme versions regardless of other plugins or configurations

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete server compromise via webshell upload leading to data theft, defacement, or ransomware deployment

🟠

Likely Case

Website defacement, malware distribution, or credential theft through uploaded malicious files

🟢

If Mitigated

Limited impact if file uploads are restricted via web application firewall or server configuration

🌐 Internet-Facing: HIGH - WordPress themes are typically internet-facing and this requires no authentication
🏢 Internal Only: MEDIUM - Internal WordPress sites could still be compromised but with less external exposure

🎯 Exploit Status

Public PoC: ⚠️ Yes
Weaponized: LIKELY
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

Simple file upload exploitation with public proof-of-concept available; easily weaponized in automated attacks

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 1.0.4 or later

Vendor Advisory: https://patchstack.com/database/Wordpress/Theme/blogmatic/vulnerability/wordpress-blogmatic-theme-1-0-3-arbitrary-file-upload-vulnerability?_s_id=cve

Restart Required: No

Instructions:

1. Log into WordPress admin panel 2. Navigate to Appearance > Themes 3. Check Blogmatic theme version 4. Update to version 1.0.4 or later 5. If update not available, switch to default theme immediately

🔧 Temporary Workarounds

Disable Blogmatic Theme

all

Switch to a different WordPress theme to eliminate the vulnerability

wp theme activate twentytwentyfour
wp theme delete blogmatic

Restrict File Uploads via .htaccess

linux

Block execution of uploaded files in WordPress uploads directory

Add to .htaccess in wp-content/uploads: <Files *.php> deny from all </Files>

🧯 If You Can't Patch

  • Immediately disable or remove the Blogmatic theme and switch to a secure alternative
  • Implement web application firewall rules to block file uploads to vulnerable endpoints

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel > Appearance > Themes for Blogmatic theme version <= 1.0.3

Check Version:

wp theme list --name=blogmatic --field=version

Verify Fix Applied:

Confirm Blogmatic theme version is 1.0.4+ or theme is deactivated/removed

📡 Detection & Monitoring

Log Indicators:

  • Unusual file uploads to wp-content/uploads
  • POST requests to theme-specific upload endpoints
  • Execution of PHP files from uploads directory

Network Indicators:

  • HTTP POST requests with file uploads to theme-related paths
  • Unusual outbound connections from WordPress server

SIEM Query:

source="web_server" AND (uri_path="/wp-content/themes/blogmatic/*" AND method="POST" AND content_type="multipart/form-data")

🔗 References

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