| Package | Affected versions | Patched versions |
|---|---|---|
| matrix-react-sdk | < 3.21.0 | 3.21.0 |
| matrix-react-sdk | < 3.21.0 | 3.21.0 |
When uploading a file, the local file preview can lead to execution of scripts embedded in the uploaded file, but only 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 has been fixed by https://github.com/matrix-org/matrix-react-sdk/pull/5981, which is included in 3.21.0.
There are no known workarounds.
Running one of these products? Scan your site to see whether it exposes a vulnerable version.
Scan my site free