AVideo: Unauthenticated FFmpeg Remote Server Status Disclosure via check.ffmpeg.json.php

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

5.3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS

• CVE-2026-35450: 0.38% estimated exploitation activity in the next 30 days; percentile 32.57 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary The plugin/API/check.ffmpeg.json.php endpoint probes the FFmpeg remote server configuration and returns connectivity status without any authentication. All sibling FFmpeg management endpoints (kill.ffmpeg.json.php, list.ffmpeg.json.php, ffmpeg.php) require User::isAdmin(). Details The entire file at plugin/API/check.ffmpeg.json.php: No User::isAdmin(), User::isLogged(), or any access control check exists. Compare with sibling endpoints in the same directory: - kill.ffmpeg.json.php checks User::isAdmin() - list.ffmpeg.json.php checks User::isAdmin() Proof of Concept Returns information about whether the platform uses a standalone FFmpeg server and its current reachability. Impact Infrastructure reconnaissance revealing the encoding architecture. Limited direct impact but aids targeted attack planning. Recommended Fix Add an admin authentication check at plugin/API/check.ffmpeg.json.php:3, after requireonce $configFile;: --- Found by aisafe.io

Published by the source

4 Apr 2026, 06:16 UTC

Last modified by the source

7 Apr 2026, 14:20 UTC

Source last checked

26 Oct 2026, 14:39 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-2vg4-rrx4-qcpq

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# Patch Next advisory brief: CVE-2026-35450

Advisory: AVideo: Unauthenticated FFmpeg Remote Server Status Disclosure via check.ffmpeg.json.php
IDs: CVE-2026-35450, GHSA-2vg4-rrx4-qcpq
Record: https://patchnext.com/advisories/cve-2026-35450 (revision 1, source checked 26 Oct 2026, 14:39 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 5.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor response not established. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist wwbn/avideo: affected <= 26.0

## Suggested inspection (read-only)
- Packagist wwbn/avideo: check the installed version with your package manager.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on wwbn/avideo.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-2vg4-rrx4-qcpq (GitHub-reviewed advisory GHSA-2vg4-rrx4-qcpq lists affected ranges: Packagist wwbn/avideo >=0 <=26.0)

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