Missing Origin Validation in WebSockets in Japan Total System products - CVE-2025-61987
Published: December 8, 2025
Vulnerability identifier: #VU119245
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-61987
CWE-ID: CWE-1385
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Japan Total System
Affected software:
GroupSession Free edition
GroupSession byCloud
GroupSession ZION
GroupSession Free edition
GroupSession byCloud
GroupSession ZION
Detailed vulnerability description
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to missing origin validation in WebSockets. A remote attacker can bypass implemented security restrictions and gain unauthorized access to sensitive information on the system.
How to mitigate CVE-2025-61987
Install updates from vendor's website.