Pydio Cells through 4.1.2 allows XSS. Pydio Cells implements the download of files using presigned URLs which are generated using the Amazon AWS SDK for JavaScript [1]. The secrets used to sign these URLs are hardcoded and exposed through the JavaScript files of the web application. Therefore, it is possible to generate valid signatures for arbitrary download URLs. By uploading an HTML file and modifying the download URL to serve the file inline instead of as an attachment, any included JavaScript code is executed when the URL is opened in a browser, leading to a cross-site scripting vulnerability.

Pydio Cells through 4.1.2 allows SSRF. For longer running processes, Pydio Cells allows for the creation of jobs, which are run in the background. The job "remote-download" can be used to cause the backend to send a HTTP GET request to a specified URL and save the response to a new file. The response file is then available in a user-specified folder in Pydio Cells.

Pydio Cells allows users by default to create so-called external users in order to share files with them. By modifying the HTTP request sent when creating such an external user, it is possible to assign the new user arbitrary roles. By assigning all roles to a newly created user, access to all cells and non-personal workspaces is granted.

A vulnerability, which was classified as problematic, has been found in Abstrium Pydio Cells 4.2.0. This issue affects some unknown processing of the component Chat. The manipulation leads to basic cross site scripting. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 4.2.1 is able to address this issue. It is recommended to upgrade the affected component. The identifier VDB-230213 was assigned to this vulnerability.

A vulnerability classified as critical was found in Abstrium Pydio Cells 4.2.0. This vulnerability affects unknown code of the component User Creation Handler. The manipulation leads to improper control of resource identifiers. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 4.2.1 is able to address this issue. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-230212.

A vulnerability classified as critical has been found in Abstrium Pydio Cells 4.2.0. This affects an unknown part of the component User Creation Handler. The manipulation leads to improper access controls. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 4.2.1 is able to address this issue. It is recommended to upgrade the affected component. The associated identifier of this vulnerability is VDB-230211.

A vulnerability was found in Abstrium Pydio Cells 4.2.0. It has been rated as problematic. Affected by this issue is some unknown functionality of the component Change Subscription Handler. The manipulation leads to authorization bypass. The exploit has been disclosed to the public and may be used. Upgrading to version 4.2.1 is able to address this issue. It is recommended to upgrade the affected component. VDB-230210 is the identifier assigned to this vulnerability.

Directory traversal in the Copy, Move, and Delete features in Pydio Cells 2.2.9 allows remote authenticated users to enumerate personal files (or Cells files belonging to any user) via the nodes parameter (for Copy and Move) or via the Path parameter (for Delete).

Directory traversal in the Compress feature in Pydio Cells 2.2.9 allows remote authenticated users to overwrite personal files, or Cells files belonging to any user, via the format parameter.

Broken access control for user creation in Pydio Cells 2.2.9 allows remote anonymous users to create standard users via the profile parameter. (In addition, such users can be granted several admin permissions via the Roles parameter.)