In Pydio before 8.2.2, an attack is possible via PHP Object Injection because a user is allowed to use the $phpserial$a:0:{} syntax to store a preference. An attacker either needs a "public link" of a file, or access to any unprivileged user account for creation of such a link.
Pydio 4.2.1 through 8.2.1 has an authenticated remote code execution vulnerability in which an attacker with administrator access to the web application can execute arbitrary code on the underlying system via Command Injection.
Pydio version 8.2.0 and earlier contains a Cross Site Scripting (XSS) vulnerability in ./core/vendor/meenie/javascript-packer/example-inline.php line 48; ./core/vendor/dapphp/securimage/examples/test.mysql.static.php lines: 114,118 that can result in an unauthenticated remote attacker manipulating the web client via XSS code injection. This attack appear to be exploitable via the victim openning a specially crafted URL. This vulnerability appears to have been fixed in version 8.2.1.
Pydio version 8.2.0 and earlier contains a Server-Side Request Forgery (SSRF) vulnerability in plugins/action.updater/UpgradeManager.php Line: 154, getUpgradePath($url) that can result in an authenticated admin users requesting arbitrary URL's, pivoting requests through the server. This attack appears to be exploitable via the attacker gaining access to an administrative account, enters a URL into Upgrade Engine, and reloads the page or presses "Check Now". This vulnerability appears to have been fixed in 8.2.1.
Pydio version 8.2.1 and prior contains an Unvalidated user input leading to Remote Code Execution (RCE) vulnerability in plugins/action.antivirus/AntivirusScanner.php: Line 124, scanNow($nodeObject) that can result in An attacker gaining admin access and can then execute arbitrary commands on the underlying OS. This attack appear to be exploitable via The attacker edits the Antivirus Command in the antivirus plugin, and executes the payload by uploading any file within Pydio.