CVE-2021-32622
Improper file handling in matrix-react-sdk
4.2
MEDIUM
CVSS 3.1
EPSS 0.17%
Description
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.
How to fix CVE-2021-32622
To remediate CVE-2021-32622, upgrade the affected package to a fixed version below.
- —upgrade to 3.21.0 or later
- —upgrade to 3.21.0 or later
Is CVE-2021-32622 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 3.21.0
- from 0, < 3.21.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.2 | CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L |