Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. Users were able to forge read receipts for any event (if they knew the room ID and event ID). Note that the users were not able to view the events, but simply mark it as read. This could be confusing as clients will show the event as read by the user, even if they are not in the room. This issue has been patched in version 1.93.0. Users are advised to upgrade. There are no known workarounds for this issue.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2023-09-26T20:49:23.365Z

Updated: 2024-08-02T19:23:38.904Z

Reserved: 2023-09-08T20:57:45.573Z

Link: CVE-2023-42453

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2023-09-27T15:19:32.453

Modified: 2024-11-21T08:22:33.887

Link: CVE-2023-42453

cve-icon Redhat

No data.