CVE-2024-42347 - CVE House
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Status published High CVE-2024-42347

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

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

matrix-react-sdk
Vulnerable Versions:
< 3.105.1

Timeline

Official Publish: August 6th, 2024
Last Modified: August 8th, 2024
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Weaknesses (CWE)

CWE-359

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.