CVE-2026-62664

FileRise is a self-hosted web-based file manager with multi-file upload, editing, and batch operations. Prior to 3.19.0, FileRise validates the complete folderName string but does not reject dot-dot path segments before FolderModel::createFolder() constructs and creates the destination. An authenticated low-privileged user with a valid CSRF token and create or owner permission on the parent can submit traversal segments to POST /api/folder/createFolder.php and create directories outside UPLOAD_DIR wherever the web-server account can write. This issue is fixed in version 3.19.0.

• https://github.com/error311/FileRise/commit/3bd5144b4bfdd03f059de18a4d106c235cf70685
• https://github.com/error311/FileRise/releases/tag/v3.19.0
• https://github.com/error311/FileRise/security/advisories/GHSA-p7vh-cjpm-rmrq