Improper file handling in matrix-react-sdk
Moderate severity
GitHub Reviewed
Published
Feb 10, 2022
to the GitHub Advisory Database
•
Updated Feb 1, 2023
Description
Published by the National Vulnerability Database
May 17, 2021
Reviewed
May 19, 2021
Published to the GitHub Advisory Database
Feb 10, 2022
Last updated
Feb 1, 2023
Matrix-React-SDK is a react-based SDK for inserting a Matrix chat/voip client into a web page. Before version 3.21.0, when uploading a file, the local file preview can lead to execution of scripts embedded in the uploaded file. This can only occur after several user interactions to open the preview in a separate tab. This only impacts the local user while in the process of uploading. It cannot be exploited remotely or by other users. This vulnerability is patched in version 3.21.0.
References