CVE-2024-53867 MEDIUM

CVE-2024-53867: Synapse Matrix has a partial room state leak via Sliding Sync

Vendor Element-Hq
Product synapse
Weakness CWE-497
Published December 3, 2024
Last update December 3, 2024
View on NVD All CVEs

CVSS base score

4.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality Low
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Synapse is an open-source Matrix homeserver. The Sliding Sync feature on Synapse versions between 1.113.0rc1 and 1.120.0 can leak partial room state changes to users no longer in a room. Non-state events, like messages, are unaffected. This vulnerability is fixed in 1.120.1.

Key dates

02Disclosure timeline

December 3, 2024 CVE published
December 3, 2024 Record updated