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VulnerabilityPublished

CVE-2026-33482: WWBN AVideo · OS Command Injection

Affects WWBN AVideoSource CVE Database V5

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Not known to be exploited · CVSS 8.1 High.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
8.1High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
4.2% chance of exploitation in 30 days – higher than 91% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 23 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
WWBNAVideoAffected
  • <=26.0
Fixed in–
GitHubwwbn/AVideopkg:github/wwbn/AVideoOther threatsAffected
  • <=26.0
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

  1. Immediately apply the official patch from the WWBN AVideo project (commit 25c8ab90269e3a01fb4cf205b40a373487f022e1) that properly sanitizes the $() syntax in ffmpeg commands.
  2. Restrict network access to the standalone encoder server to trusted administrators and systems only, using firewalls and network segmentation.
  3. Implement strict input validation and sanitization on all user-supplied data that may influence command execution, beyond relying solely on sanitizeFFmpegCommand().
  4. Monitor logs and system behavior for unusual command execution patterns or unexpected processes spawned by ffmpeg commands.
  5. Consider running the encoder server with least privilege, using containerization or sandboxing to limit the impact of potential exploitation.
  6. Regularly update AVideo and dependencies to incorporate security fixes.
  7. Educate developers and administrators about secure coding practices related to command execution and shell metacharacter handling.

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.

References

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