Where
AND
-Infinity
0

Trending

Last week
Last month
Last year

pip/matrix-synapseImproper validation of receipts allows forged read receipts in matrix synapse

Risk 23
Severity
4.3
AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N

Impact 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.

Patches https://github.com/matrix-org/synapse/pull/16327

Workarounds There is no workaround.

1 / 3
Source: GitHub
First published (updated )
CVE-2023-42453

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203