CVE-2026-55173: Improper Neutralization of Special Elements used in an OS Command

WWBN AVideo is an open source video platform. Versions 29.0 and below remain vulnerable to OS command injection because the fix for CVE-2026-33482 was incomplete and still does not neutralize a single & the shell background operator. CVE-2026-33482 reported that sanitizeFFmpegCommand...

CVE-2026-33482

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 ...

CVE-2026-33482

CVE-2026-33482 affects WWBN AVideo prior to 26.1 (up to 26.0) where sanitizeFFmpegCommand() fails to remove $() (bash command substitution). Since the sanitized ffmpeg command is executed in a double-quoted sh -c context, an attacker able to supply a crafted encrypted payload can achieve arbitrar...

AVideo has an OS Command Injection via $() Shell Substitution Bypass in sanitizeFFmpegCommand()

Summary 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...