CVE-2025-51661: Lanol Filecodebox

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

A path Traversal vulnerability found in FileCodeBox v2.2 and earlier allows arbitrary file writes when application is configured to use local filesystem storage. SystemFileStorage.save_file method in core/storage.py uses filenames from user input without validation to construct save_path and save files. This allows remote attackers to perform arbitrary file writes outside the intended directory by sending crafted POST requests with malicious traversal sequences to /share/file/ upload endpoint, which does not require any authorization.

Affected products

• Lanol Filecodebox: up to and including 2.2

Published 2025-11-19. Last modified 2026-06-17.