CVE-2024-52815

MEDIUM

Synapse < 1.120.1 - Denial of Service via Malformed Federation Invite

Title source: llm
STIX 2.1

Description

Synapse is an open-source Matrix homeserver. Synapse versions before 1.120.1 fail to properly validate invites received over federation. This vulnerability allows a malicious server to send a specially crafted invite that disrupts the invited user's /sync functionality. Synapse 1.120.1 rejects such invalid invites received over federation and restores the ability to sync for affected users.

References (1)

Core 1
Core References

Scores

CVSS v3 5.3
EPSS 0.0035
EPSS Percentile 57.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-20
Status published
Products (2)
matrix/synapse < 1.120.1
pypi/matrix-synapse 0 - 1.120.1PyPI
Published Dec 03, 2024
Tracked Since Feb 18, 2026