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Information Exposure Affecting matrix-js-sdk package, versions <12.4.1

0.0
medium

Snyk CVSS

    Attack Complexity Low

    Threat Intelligence

    EPSS 0.08% (32nd percentile)
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NVD
5.9 medium

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  • Snyk ID SNYK-JS-MATRIXJSSDK-1584628
  • published 14 Sep 2021
  • disclosed 14 Sep 2021
  • credit Denis Kasak
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Introduced: 14 Sep 2021

CVE-2021-40823 Open this link in a new tab
CWE-200 Open this link in a new tab

How to fix?

Upgrade matrix-js-sdk to version 12.4.1 or higher.

Overview

matrix-js-sdk is a Matrix Client-Server SDK for Javascript

Affected versions of this package are vulnerable to Information Exposure. It may be possible to trick vulnerable clients into disclosing encryption keys for messages previously sent by that client to user accounts later compromised by an attacker.