CVE-2025-62415
📋 TL;DR
This vulnerability allows authenticated administrators in Bagisto v2.3.7 to upload malicious HTML files containing JavaScript through the TinyMCE image upload feature. When these files are viewed, the JavaScript executes in the victim's browser, potentially leading to session hijacking or further attacks. Only users with administrative privileges are directly affected.
💻 Affected Systems
- Bagisto
📦 What is this software?
Bagisto by Webkul
⚠️ Risk & Real-World Impact
Worst Case
An attacker with admin access could upload malicious HTML files that execute JavaScript when viewed by other administrators, potentially leading to complete account takeover, data theft, or further privilege escalation within the eCommerce platform.
Likely Case
A compromised admin account could upload malicious files that execute JavaScript in other admin browsers, potentially stealing session cookies or performing unauthorized actions on behalf of other administrators.
If Mitigated
With proper access controls and file upload restrictions, the impact is limited to administrators who intentionally upload malicious content, with minimal risk to regular users or customer data.
🎯 Exploit Status
Requires admin-level access to exploit. The vulnerability is in file upload validation logic.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v2.3.8
Vendor Advisory: https://github.com/bagisto/bagisto/security/advisories/GHSA-67px-r26w-598x
Restart Required: No
Instructions:
1. Backup your Bagisto installation and database. 2. Update Bagisto to version 2.3.8 using composer: 'composer require bagisto/bagisto:2.3.8'. 3. Run database migrations if needed: 'php artisan migrate'. 4. Clear cache: 'php artisan cache:clear'.
🔧 Temporary Workarounds
Disable TinyMCE image upload
allTemporarily disable the TinyMCE image upload functionality for all admin users until patching.
Modify Bagisto configuration to remove or disable TinyMCE file upload capabilities
Restrict file upload extensions
allConfigure web server or application to block HTML file uploads through the TinyMCE endpoint.
Add server-side validation to reject .html, .htm, and .xhtml file uploads
🧯 If You Can't Patch
- Implement strict file upload validation to only allow image file types (jpg, png, gif, etc.)
- Monitor admin user activity and file upload logs for suspicious behavior
🔍 How to Verify
Check if Vulnerable:
Check Bagisto version by running: 'php artisan --version' or check composer.json for bagisto version. If version is 2.3.7, system is vulnerable.Check Version:
php artisan --versionVerify Fix Applied:
After updating, verify version is 2.3.8 using 'php artisan --version'. Test file upload functionality with HTML files to ensure they are rejected.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads via TinyMCE endpoints
- HTML file upload attempts by admin users
- Multiple failed upload attempts with non-image files
Network Indicators:
- HTTP POST requests to TinyMCE upload endpoints with HTML content
- Unusual file upload patterns from admin accounts
SIEM Query:
source="web_logs" AND (uri_path="/admin/tinymce/upload" OR uri_path LIKE "%/tinymce/upload") AND (file_extension=".html" OR file_extension=".htm" OR content_type="text/html")