CVE-2026-33482
HighSummary
WWBN AVideo to otwartoźródłowa platforma wideo. W wersjach do 26.0 w funkcji `sanitizeFFmpegCommand()` występuje luka, która pozwala na wykonanie dowolnych poleceń systemowych poprzez nieprawidłowe filtrowanie składni `$()` w komendach ffmpeg.
Risk Assessment
Atakujący, który potrafi stworzyć odpowiednio przygotowany zaszyfrowany ładunek, może uzyskać dostęp do wykonania dowolnych poleceń na serwerze enkodera. To stwarza poważne zagrożenie dla bezpieczeństwa systemu.
Recommendation
Zaleca się aktualizację do wersji 26.1 lub nowszej, w której wprowadzono poprawkę eliminującą tę lukę. Należy również przeprowadzić audyt zabezpieczeń systemu.
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Original NVD description (English source)
WWBN AVideo is an open source video platform. In versions up to and including 26.0, the `sanitizeFFmpegCommand()` function in `plugin/API/standAlone/functions.php` is designed to prevent OS command injection in ffmpeg commands by stripping dangerous shell metacharacters (`&&`, `;`, `|`, `` ` ``, `<`, `>`). However, it fails to strip `$()` (bash command substitution syntax). Since the sanitized command is executed inside a double-quoted `sh -c` context in `execAsync()`, an attacker who can craft a valid encrypted payload can achieve arbitrary command execution on the standalone encoder server. Commit 25c8ab90269e3a01fb4cf205b40a373487f022e1 contains a patch.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

