GHSA-cg57-p69r-3m7p
Improper file handling in matrix-react-sdk
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | matrix-react-sdk | < 3.21.0 | 3.21.0 |
Details
As written in the advisory (Markdown source, shown as plain text).
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
External links from the advisory. They lead to third-party sites.