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
References
https://github.com/matrix-org/matrix-react-sdk/pull/5981
https://github.com/matrix-org/matrix-react-sdk/security/advisories/GHSA-8796-gc9j-63rv
Related Vulnerabilities
CVE-2022-25937 Vulnerability in npm package glance
CVE-2022-41918 Vulnerability in maven package org.opensearch.plugin:opensearch-security
CVE-2022-1291 Vulnerability in npm package tableexport.jquery.plugin
CVE-2020-36319 Vulnerability in maven package com.vaadin:flow-server
CVE-2020-19697 Vulnerability in maven package org.webjars.npm:editor.md