CVE-2026-40909
HighCVSS 8.7Exploitation Probability (EPSS)
Elevated risk51th percentile - higher than 51% of all known CVEs
Summary
WWBN AVideo to otwarta platforma wideo. W wersjach 29.0 i wcześniejszych, punkt końcowy zapisu lokalizacji (`locale/save.php`) konstruuje ścieżkę pliku, bezpośrednio łącząc `$_POST['flag']` w ścieżkę bez jakiejkolwiek sanitizacji. Parametr `$_POST['code']` jest następnie zapisywany dosłownie w tej ścieżce, co pozwala na wykonanie zdalnego kodu.
Risk Assessment
Atakujący z uprawnieniami administratora lub użytkownik, który może przeprowadzić atak CSRF na administratora, może wykorzystać tę podatność do zapisu dowolnych plików `.php` w systemie plików, co prowadzi do zdalnego wykonania kodu. To stwarza poważne zagrożenie dla bezpieczeństwa systemu.
Recommendation
Zaleca się aktualizację do wersji, w której problem został naprawiony (commit 57f89ffbc27d37c9d9dd727212334846e78ac21a) oraz wdrożenie mechanizmów ochrony przed atakami CSRF.
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Original NVD description (English source)
WWBN AVideo is an open source video platform. In versions 29.0 and prior, the locale save endpoint (`locale/save.php`) constructs a file path by directly concatenating `$_POST['flag']` into the path at line 30 without any sanitization. The `$_POST['code']` parameter is then written verbatim to that path via `fwrite()` at line 40. An admin attacker (or any user who can CSRF an admin, since no CSRF token is checked and cookies use `SameSite=None`) can traverse out of the `locale/` directory and write arbitrary `.php` files to any writable location on the filesystem, achieving Remote Code Execution. Commit 57f89ffbc27d37c9d9dd727212334846e78ac21a fixes the issue.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

