CVE-2024-53867CWE-497

Synapse Matrix has a partial room state leak via Sliding Sync

Medium · published December 3, 2024

CVSS v3.1
4.3
EPSS
0%
Percentile
37.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00442 · 37.4th percentile
Weakness
CWE-497 · Exposure of Sensitive System Information to an Unauthorized Control Sphere
Published
2024-12-03T16:52Z
EPSS history
Timeline
  • 03 DEC 16:52Z
    Synapse Matrix has a partial room state leak via Sliding Sync
    cvelistv5