#VU127001 Input validation error in Synapse - CVE-2024-52815

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU127001

#VU127001 Input validation error in Synapse - CVE-2024-52815

Published: December 3, 2024 / Updated: April 23, 2026


Vulnerability identifier: #VU127001
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2024-52815
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Synapse
Software vendor:
Matrix.org

Description

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper input validation in invite validation over federation when processing invites received over federation. A remote attacker can send a specially crafted invite to cause a denial of service.

The issue can disrupt the invited user's /sync functionality.


Remediation

Install security update from vendor's website.

External links