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: 6.9 [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]
CVE-ID: CVE-2025-61987
CWE-ID: CWE-1385
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
GroupSession Free edition
GroupSession ZION
GroupSession byCloud
GroupSession ZION
GroupSession byCloud
How to mitigate CVE-2025-61987
Install updates from vendor's website.
GroupSession Free edition - update to 5.3.0
GroupSession ZION - update to 5.3.2
GroupSession byCloud - update to 5.3.3
GroupSession ZION - update to 5.3.2
GroupSession byCloud - update to 5.3.3