Advisory details:
github_osv / GHSA-2vg4-rrx4-qcpq
| Advisory ID | github_osv/GHSA-2vg4-rrx4-qcpq |
| Aliases |
CVE-2026-35450
|
| Summary | AVideo: Unauthenticated FFmpeg Remote Server Status Disclosure via check.ffmpeg.json.php ## 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`: ```php <?php $configFile = __DIR__.'/../../videos/configuration.php'; require_once $configFile; header('Content-Type: application/json'); $obj = testFFMPEGRemote(); die(json_encode($obj)); ``` 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 ```bash curl "https://your-avideo-instance.com/plugin/API/check.ffmpeg.json.php" ``` 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 `require_once $configFile;`: ```php if (!User::isAdmin()) { forbiddenPage('Admin only'); } ``` --- *Found by [aisafe.io](https://aisafe.io)* |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 4.8 |
| Risk | 2.4 |
| Affected and Fixed Packages | Package Details |
| Introduced and Fixed Package Commit Patches | Package Commit Patches Details |
| System | Score | Found at |
|---|---|---|
| cvssv3.1 | 5.3 | https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-2vg4-rrx4-qcpq/GHSA-2vg4-rrx4-qcpq.json |
| generic_textual | MODERATE |
| Reference id | Reference type | URL |
|---|---|---|
| https://github.com/WWBN/AVideo | ||
| https://github.com/WWBN/AVideo/security/advisories/GHSA-2vg4-rrx4-qcpq | ||
| CVE-2026-35450 | https://nvd.nist.gov/vuln/detail/CVE-2026-35450 |
No EPSS data available for this advisory.
| Patch URL | |
|---|---|
| There are no known patches. | |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
Vector: SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2026-04-07T16:21:36Z/
Decision: Track
Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/35xxx/CVE-2026-35450.json
Source Advisory: vulnrichment/CVE-2026-35450
[{'Exploitation': 'poc'},
{'Automatable': 'yes'},
{'Technical Impact': 'partial'},
{'Mission Prevalence': 'minimal'},
{'Public Well-being Impact': 'material'},
{'Mission & Well-being': 'medium'}]