vulnerability
Gentoo Linux: CVE-2023-42453: Synapse: Multiple Vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:N/AC:M/Au:S/C:N/I:P/A:N) | Sep 27, 2023 | Jan 8, 2024 | Aug 13, 2025 |
Severity
4
CVSS
(AV:N/AC:M/Au:S/C:N/I:P/A:N)
Published
Sep 27, 2023
Added
Jan 8, 2024
Modified
Aug 13, 2025
Description
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.
Solution
gentoo-linux-upgrade-net-im-synapse
NEW
Explore Exposure Command
Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.