Name: CVE-2024-53867: Exposure of Sensitive System Information to an Unauthorized Control Sphere
Creator: Rapid7
Published: 2024-12-03T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2024-53867, CVSS 4.3, EPSS 0.00442

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.

CVSS Details

CVSS 3.1 Base Score: 4.3
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Alpine Linux	—	Upgrade synapse	Aug 8, 2025	Dec 3, 2024
Freebsd	—	Upgrade py311-matrix-synapseUpgrade py38-matrix-synapseUpgrade py39-matrix-synapseUpgrade py310-matrix-synapse	Dec 18, 2024	Dec 15, 2024

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CVSS Details

Covered by Rapid7

Prioritise with Active Threat Intelligence