CVE-2023-49815
📋 TL;DR
CVE-2023-49815 is an unauthenticated arbitrary file upload vulnerability in the WappPress WordPress plugin. Attackers can upload malicious files without authentication, potentially leading to remote code execution. All WordPress sites using WappPress versions up to 5.0.3 are affected.
💻 Affected Systems
- WappPress 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
Complete server compromise via remote code execution, allowing attackers to install backdoors, steal data, deface websites, or pivot to internal networks.
Likely Case
Website defacement, malware distribution, credential theft, or creation of persistent backdoors for future attacks.
If Mitigated
Limited impact if file execution is prevented, though attackers could still consume disk space or host malicious content.
🎯 Exploit Status
Exploitation requires no authentication and minimal technical skill. Public exploit code is available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 5.0.4 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find WappPress and update to version 5.0.4 or later. 4. If update not available, deactivate and delete the plugin immediately.
🔧 Temporary Workarounds
Web Application Firewall Rule
allBlock file upload requests to WappPress endpoints
WAF specific - configure to block POST requests containing file uploads to /wp-content/plugins/wapppress/
File System Permissions
linuxRestrict write permissions to upload directories
chmod 755 /path/to/wp-content/plugins/wapppress/
chmod 644 /path/to/wp-content/plugins/wapppress/*.php
🧯 If You Can't Patch
- Immediately deactivate and remove the WappPress plugin from all WordPress installations.
- Implement strict file upload validation at the web server level using mod_security or equivalent.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for WappPress version. If version is 5.0.3 or lower, you are vulnerable.Check Version:
wp plugin list --name=wapppress --field=version (if WP-CLI installed) or check WordPress admin panelVerify Fix Applied:
After updating, verify WappPress version shows 5.0.4 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to /wp-content/plugins/wapppress/ endpoints
- POST requests with file parameters to WappPress URLs
- Creation of unexpected files in plugin directories
Network Indicators:
- HTTP POST requests containing file uploads to WappPress paths from unauthenticated sources
- Subsequent requests to uploaded malicious files
SIEM Query:
source="web_logs" AND (uri_path="/wp-content/plugins/wapppress/" AND http_method="POST" AND (user_agent="*curl*" OR user_agent="*wget*" OR http_status=200))🔗 References
- https://patchstack.com/database/vulnerability/wapppress-builds-android-app-for-website/wordpress-wapppress-plugin-5-0-3-unauthenticated-arbitrary-file-upload-vulnerability?_s_id=cve
- https://patchstack.com/database/vulnerability/wapppress-builds-android-app-for-website/wordpress-wapppress-plugin-5-0-3-unauthenticated-arbitrary-file-upload-vulnerability?_s_id=cve
