CVE-2026-25732
HighSummary
NiceGUI to framework UI oparty na Pythonie. W wersjach przed 3.7.0 właściwość FileUpload.name ujawnia metadane nazwy pliku dostarczone przez klienta bez sanitizacji, co umożliwia ataki typu path traversal, gdy deweloperzy używają wzorca UPLOAD_DIR / file.name.
Risk Assessment
Złośliwe nazwy plików zawierające sekwencje ../ mogą pozwolić atakującym na zapis plików poza zamierzonymi katalogami, co stwarza ryzyko zdalnego wykonania kodu poprzez nadpisywanie plików aplikacji w podatnych wzorcach wdrożeniowych.
Recommendation
Zaleca się aktualizację do wersji 3.7.0 lub nowszej, aby usunąć tę podatność. Dodatkowo, należy unikać używania file.name w ścieżkach systemu plików bez odpowiedniej sanitizacji.
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Original NVD description (English source)
NiceGUI is a Python-based UI framework. Prior to 3.7.0, NiceGUI's FileUpload.name property exposes client-supplied filename metadata without sanitization, enabling path traversal when developers use the pattern UPLOAD_DIR / file.name. Malicious filenames containing ../ sequences allow attackers to write files outside intended directories, with potential for remote code execution through application file overwrites in vulnerable deployment patterns. This design creates a prevalent security footgun affecting applications following common community patterns. Note: Exploitation requires application code incorporating file.name into filesystem paths without sanitization. Applications using fixed paths, generated filenames, or explicit sanitization are not affected. This vulnerability is fixed in 3.7.0.