CVE-2026-33482

CVE-2026-33482 · AVideo has an OS Command Injection via $() Shell Substitution Bypass in sanitizeFFmpegCommand()

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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.

CVSS 8.1 · High · EPSS 4.3%

Published

2026-03-23T14:10:10.157Z

Updated

2026-03-23T18:08:31.712Z

Stack: php

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