Sandbox Bypass Affecting matrix-react-sdk package, versions <3.15.0


Severity

Recommended
0.0
low
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.09% (40th percentile)

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  • Snyk IDSNYK-JS-MATRIXREACTSDK-1080741
  • published2 Mar 2021
  • disclosed2 Mar 2021
  • creditUnknown

Introduced: 2 Mar 2021

CVE-2021-21320  (opens in a new tab)
CWE-20  (opens in a new tab)
CWE-265  (opens in a new tab)

How to fix?

Upgrade matrix-react-sdk to version 3.15.0 or higher.

Overview

matrix-react-sdk is a SDK for matrix.org using React

Affected versions of this package are vulnerable to Sandbox Bypass. The user content sandbox can be abused to trick users into opening unexpected documents. Messages and secrets are not at risk: the content is opened with a blob origin, which cannot access Matrix user data.

CVSS Scores

version 3.1