CVE-2024-53867

medium

Description

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.

References

https://github.com/matrix-org/matrix-spec-proposals/pull/4186

https://github.com/element-hq/synapse/security/advisories/GHSA-56w4-5538-8v8h

Details

Source: Mitre, NVD

Published: 2024-12-03

Updated: 2024-12-03

Risk Information

CVSS v2

Base Score: 4

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 4.3

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N