CVE-2024-52815

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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/element-hq/synapse/security/advisories/GHSA-f3r3-h2mq-hx2h	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:matrix:synapse:*:*:*:*:*:*:*:*

History

26 Aug 2025, 15:02

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.3
CWE		NVD-CWE-noinfo
CPE		cpe:2.3:a:matrix:synapse::::::::
Summary		(es) Synapse es un servidor doméstico Matrix de código abierto. Las versiones de Synapse anteriores a la 1.120.1 no pueden validar correctamente las invitaciones recibidas a través de la federación. Esta vulnerabilidad permite que un servidor malintencionado envíe una invitación especialmente manipulada que interrumpe la funcionalidad /sync del usuario invitado. Synapse 1.120.1 rechaza dichas invitaciones no válidas recibidas a través de la federación y restaura la capacidad de sincronización de los usuarios afectados.
First Time		Matrix synapse Matrix
References	~~() https://github.com/element-hq/synapse/security/advisories/GHSA-f3r3-h2mq-hx2h -~~	() https://github.com/element-hq/synapse/security/advisories/GHSA-f3r3-h2mq-hx2h - Vendor Advisory

03 Dec 2024, 17:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2024-12-03 17:15

Updated : 2025-08-26 15:02

NVD link : CVE-2024-52815

Mitre link : CVE-2024-52815

CVE.ORG link : CVE-2024-52815

JSON object : View

Products Affected

matrix

synapse

CWE

CWE-20

Improper Input Validation

NVD-CWE-noinfo

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