CVE-2026-25059
📋 TL;DR
OpenList Frontend versions before 4.1.10 contain a path traversal vulnerability in file operation handlers that allows authenticated attackers to bypass directory restrictions. By injecting '..' sequences into filename parameters, attackers can access, delete, rename, or copy other users' files within the same storage mount. This affects all deployments using vulnerable versions of OpenList Frontend.
💻 Affected Systems
- OpenList Frontend
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of all user data within the storage mount, including deletion of critical files, data exfiltration, and potential privilege escalation if system files are accessible.
Likely Case
Unauthorized access to other users' files, data theft, and potential data destruction through file deletion or corruption.
If Mitigated
Limited impact if proper network segmentation and access controls prevent authenticated attackers from reaching vulnerable endpoints.
🎯 Exploit Status
Exploitation requires authenticated access but is technically simple - just requires path traversal sequences in filename parameters.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.1.10
Vendor Advisory: https://github.com/OpenListTeam/OpenList/security/advisories/GHSA-qmj2-8r24-xxcq
Restart Required: Yes
Instructions:
1. Backup your configuration and data. 2. Stop the OpenList Frontend service. 3. Update to version 4.1.10 or later. 4. Restart the service. 5. Verify the fix is applied.
🔧 Temporary Workarounds
Input Validation Filter
allImplement middleware or proxy that validates and sanitizes filename parameters before they reach the vulnerable handlers.
Access Restriction
allRestrict network access to the vulnerable endpoints using firewall rules or network segmentation.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate the vulnerable component from sensitive data and other users
- Deploy a web application firewall (WAF) with path traversal detection rules
🔍 How to Verify
Check if Vulnerable:
Check if OpenList Frontend version is below 4.1.10. Review server/handles/fsmanage.go for the vulnerable path concatenation pattern.Check Version:
Check the application version in the web interface or configuration files, or run the application with --version flag if available.Verify Fix Applied:
Verify version is 4.1.10 or later. Check that the commit 7b78fed106382430c69ef351d43f5d09928fff14 is applied in the codebase.📡 Detection & Monitoring
Log Indicators:
- File operations with '..' sequences in filenames
- Unauthorized file access patterns across user directories
- Failed authorization attempts on file operations
Network Indicators:
- HTTP requests to file operation endpoints with path traversal sequences in parameters
SIEM Query:
source="openlist" AND (filename="*..*" OR path="*..*")