CVE-2024-42347 HIGH

CVE-2024-42347: URL preview setting for a room is controllable by the homeserver in matrix-react-sdk

Vendor Matrix-Org
Product matrix-react-sdk
Weakness CWE-359
Published August 6, 2024
Last update August 8, 2024
View on NVD All CVEs

CVSS base score

7.7/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

What the vulnerability does

01Description

matrix-react-sdk is a react-based SDK for inserting a Matrix chat/voip client into a web page. A malicious homeserver could manipulate a user's account data to cause the client to enable URL previews in end-to-end encrypted rooms, in which case any URLs in encrypted messages would be sent to the server. This was patched in matrix-react-sdk 3.105.0. Deployments that trust their homeservers, as well as closed federations of trusted servers, are not affected. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Key dates

02Disclosure timeline

August 6, 2024 CVE published
August 8, 2024 Record updated