CVE-2021-32622

File upload local preview can run embedded scripts after user interaction

Published May 17, 2021 CVSS 3.1 · 4.2 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2022-0961 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.
Github GHSA Github GHSA GHSA-cg57-p69r-3m7p Improper file handling in matrix-react-sdk
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Aug 3, 2024, 11:25 PM
Reserved
May 12, 2021, 12:00 AM
Status
Modified
Published
May 17, 2021, 8:15 PM
Modified
Jun 17, 2026, 3:53 AM