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.

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-pmj8-r2j7-xg6c AVideo has an OS Command Injection via $() Shell Substitution Bypass in sanitizeFFmpegCommand()
Fixes

Solution

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Workaround

No workaround given by the vendor.

History

Mon, 23 Mar 2026 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 23 Mar 2026 14:30:00 +0000

Type Values Removed Values Added
Description 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.
Title AVideo has an OS Command Injection via $() Shell Substitution Bypass in sanitizeFFmpegCommand()
Weaknesses CWE-78
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-03-23T18:08:31.712Z

Reserved: 2026-03-20T16:16:48.970Z

Link: CVE-2026-33482

cve-icon Vulnrichment

Updated: 2026-03-23T18:08:13.125Z

cve-icon NVD

Status : Received

Published: 2026-03-23T15:16:34.560

Modified: 2026-03-23T15:16:34.560

Link: CVE-2026-33482

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses