CVE-2026-24897
📋 TL;DR
CVE-2026-24897 is a critical path traversal vulnerability in Erugo file-sharing platform that allows authenticated low-privileged users to upload arbitrary files to any writable location on the server. By uploading malicious files to the web root, attackers can achieve remote code execution and fully compromise the Erugo instance. All Erugo instances running versions 0.2.14 or earlier are affected.
💻 Affected Systems
- Erugo
📦 What is this software?
Erugo by Erugo
⚠️ Risk & Real-World Impact
Worst Case
Complete server compromise with attacker gaining full control over the Erugo instance and potentially the underlying operating system, leading to data theft, lateral movement, or ransomware deployment.
Likely Case
Remote code execution allowing attackers to execute arbitrary commands, steal sensitive data, install backdoors, or use the server for further attacks.
If Mitigated
Limited impact if proper file permission restrictions and web server configurations prevent execution of uploaded files in web-accessible directories.
🎯 Exploit Status
Exploitation requires authenticated access but is straightforward once an attacker has any valid user account. The vulnerability is simple to exploit with basic web testing tools.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 0.2.15
Vendor Advisory: https://github.com/ErugoOSS/Erugo/security/advisories/GHSA-336w-hgpq-6369
Restart Required: Yes
Instructions:
1. Backup your Erugo configuration and data. 2. Stop the Erugo service. 3. Update to version 0.2.15 using your package manager or by downloading from GitHub releases. 4. Restart the Erugo service. 5. Verify the update was successful.
🔧 Temporary Workarounds
Restrict file upload permissions
linuxConfigure web server and file system permissions to prevent execution of uploaded files in web-accessible directories
chmod -R 644 /path/to/erugo/uploads/*
chown -R www-data:www-data /path/to/erugo/uploads/
Implement web application firewall rules
allBlock requests containing path traversal sequences in file upload parameters
🧯 If You Can't Patch
- Disable file sharing functionality entirely until patching is possible
- Implement strict network segmentation to isolate Erugo instances from sensitive systems
🔍 How to Verify
Check if Vulnerable:
Check Erugo version in admin panel or configuration files. If version is 0.2.14 or earlier, the system is vulnerable.Check Version:
grep -i version /path/to/erugo/config/*.yml || check Erugo admin interfaceVerify Fix Applied:
Verify Erugo version is 0.2.15 or later and test that path traversal attempts in file uploads are properly rejected.📡 Detection & Monitoring
Log Indicators:
- Unusual file upload patterns
- Requests containing '../' sequences in file paths
- Multiple failed upload attempts from single user
- Uploads to non-standard directories
Network Indicators:
- Unusual outbound connections from Erugo server
- Spike in upload traffic from authenticated users
SIEM Query:
source="erugo.log" AND ("../" OR "..\\" OR "%2e%2e%2f") AND action="upload"