CVE-2025-12747
📋 TL;DR
The Tainacan WordPress plugin exposes private uploaded files to unauthenticated users due to inadequate access controls. This vulnerability allows attackers to access sensitive files marked as private by directly requesting them from the wp-content directory. All WordPress sites using Tainacan versions up to 1.0.0 are affected.
💻 Affected Systems
- Tainacan WordPress plugin
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Sensitive documents containing personal data, financial information, or intellectual property are exposed to the public internet, leading to data breaches, regulatory fines, and reputational damage.
Likely Case
Attackers discover and download private files containing user information, internal documents, or other sensitive content that administrators believed were protected.
If Mitigated
Files remain protected with proper access controls, preventing unauthorized access even if attackers attempt to enumerate or request them directly.
🎯 Exploit Status
Exploitation requires knowing or guessing file paths, which could be discovered through enumeration or other information leakage.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.0.1
Vendor Advisory: https://github.com/tainacan/tainacan/compare/1.0.0...1.0.1
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Tainacan plugin. 4. Click 'Update Now' if update is available. 5. Alternatively, download version 1.0.1+ from WordPress repository and replace the plugin files.
🔧 Temporary Workarounds
Restrict access to wp-content/tainacan-private directory
linuxAdd .htaccess rules to block direct access to private files directory
echo 'Deny from all' > /path/to/wp-content/tainacan-private/.htaccess
Move private files outside web root
allConfigure Tainacan to store private files in a directory not accessible via web
🧯 If You Can't Patch
- Disable the Tainacan plugin until patching is possible
- Remove all private files uploaded through Tainacan and store them in a secure location
🔍 How to Verify
Check if Vulnerable:
Check if Tainacan plugin version is 1.0.0 or lower in WordPress admin panel or by examining the plugin's readme.txt file.Check Version:
grep -i 'version' /path/to/wp-content/plugins/tainacan/readme.txtVerify Fix Applied:
After updating, verify the plugin version shows 1.0.1 or higher and test that private files return 403/404 errors when accessed directly by unauthenticated users.📡 Detection & Monitoring
Log Indicators:
- Multiple 200 OK responses to direct file requests in wp-content/tainacan-private directory
- Unusual file download patterns from non-authenticated IP addresses
Network Indicators:
- Direct HTTP requests to private file paths without authentication headers
- File enumeration attempts against tainacan-private directory
SIEM Query:
source="web_access_logs" AND (uri CONTAINS "/wp-content/tainacan-private/" OR uri CONTAINS "tainacan_private_file") AND status=200 AND NOT (user_agent CONTAINS "WordPress" OR user_agent CONTAINS "admin")