CVE-2021-32622
Before version 3.21.0, when uploading a file, the local file preview can lead to execution of scripts embedded in the uploaded file.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.37%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 0.37% probability · 31th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-74, CWE-434
- Affected
- matrix-react-sdk project/matrix-react-sdk
- Source
- security-advisories@github.com
References
- https://github.com/matrix-org/matrix-react-sdk/pull/5981Patch, Third Party Advisory
- https://github.com/matrix-org/matrix-react-sdk/security/advisories/GHSA-8796-gc9j-63rvPatch, Third Party Advisory
- https://github.com/matrix-org/matrix-react-sdk/pull/5981Patch, Third Party Advisory
- https://github.com/matrix-org/matrix-react-sdk/security/advisories/GHSA-8796-gc9j-63rvPatch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.